20128308980

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{29}}^2\times {\mathrm{73}}^1\times {\mathrm{97}}^1$

素因数の和:263

約数の個数: 216

約数和(自身を含む): 48548557512

約数和(自身を除く): 28420248532

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 29, 52, 58, 65, 73, 97, 116, 130, 145, 146, 169, 194, 260, 290, 292, 338, 365, 377, 388, 485, 580, 676, 730, 754, 841, 845, 949, 970, 1261, 1460, 1508, 1682, 1690, 1885, 1898, 1940, 2117, 2522, 2813, 3364, 3380, 3770, 3796, 4205, 4234, 4745, 4901, 5044, 5626, 6305, 7081, 7540, 8410, 8468, 9490, 9802, 10585, 10933, 11252, 12337, 12610, 14065, 14162, 16393, 16820, 18980, 19604, 21170, 21866, 24505, 24674, 25220, 27521, 28130, 28324, 32786, 35405, 36569, 42340, 43732, 49010, 49348, 54665, 55042, 56260, 61393, 61685, 65572, 70810, 73138, 81577, 81965, 92053, 98020, 109330, 110084, 122786, 123370, 137605, 141620, 142129, 146276, 163154, 163930, 182845, 184106, 205349, 218660, 245572, 246740, 275210, 284258, 306965, 326308, 327860, 357773, 365690, 368212, 407885, 410698, 460265, 475397, 550420, 568516, 613930, 710645, 715546, 731380, 798109, 815770, 821396, 920530, 950794, 1026745, 1060501, 1196689, 1227860, 1421290, 1431092, 1596218, 1631540, 1788865, 1841060, 1901588, 2053490, 2121002, 2376985, 2393378, 2669537, 2842580, 3192436, 3577730, 3990545, 4106980, 4242004, 4753970, 4786756, 5302505, 5339074, 5955121, 5983445, 7155460, 7981090, 9507940, 10375417, 10605010, 10678148, 11910242, 11966890, 13347685, 13786513, 15962180, 20750834, 21210020, 23820484, 23933780, 26695370, 27573026, 29775605, 34703981, 41501668, 51877085, 53390740, 55146052, 59551210, 68932565, 69407962, 77416573, 103754170, 119102420, 137865130, 138815924, 154833146, 173519905, 207508340, 275730260, 309666292, 347039810, 387082865, 694079620, 774165730, 1006415449, 1548331460, 2012830898, 4025661796, 5032077245, 10064154490, 20128308980]

約数ペア:

[(1, 20128308980), (2, 10064154490), (4, 5032077245), (5, 4025661796), (10, 2012830898), (13, 1548331460), (20, 1006415449), (26, 774165730), (29, 694079620), (52, 387082865), (58, 347039810), (65, 309666292), (73, 275730260), (97, 207508340), (116, 173519905), (130, 154833146), (145, 138815924), (146, 137865130), (169, 119102420), (194, 103754170), (260, 77416573), (290, 69407962), (292, 68932565), (338, 59551210), (365, 55146052), (377, 53390740), (388, 51877085), (485, 41501668), (580, 34703981), (676, 29775605), (730, 27573026), (754, 26695370), (841, 23933780), (845, 23820484), (949, 21210020), (970, 20750834), (1261, 15962180), (1460, 13786513), (1508, 13347685), (1682, 11966890), (1690, 11910242), (1885, 10678148), (1898, 10605010), (1940, 10375417), (2117, 9507940), (2522, 7981090), (2813, 7155460), (3364, 5983445), (3380, 5955121), (3770, 5339074), (3796, 5302505), (4205, 4786756), (4234, 4753970), (4745, 4242004), (4901, 4106980), (5044, 3990545), (5626, 3577730), (6305, 3192436), (7081, 2842580), (7540, 2669537), (8410, 2393378), (8468, 2376985), (9490, 2121002), (9802, 2053490), (10585, 1901588), (10933, 1841060), (11252, 1788865), (12337, 1631540), (12610, 1596218), (14065, 1431092), (14162, 1421290), (16393, 1227860), (16820, 1196689), (18980, 1060501), (19604, 1026745), (21170, 950794), (21866, 920530), (24505, 821396), (24674, 815770), (25220, 798109), (27521, 731380), (28130, 715546), (28324, 710645), (32786, 613930), (35405, 568516), (36569, 550420), (42340, 475397), (43732, 460265), (49010, 410698), (49348, 407885), (54665, 368212), (55042, 365690), (56260, 357773), (61393, 327860), (61685, 326308), (65572, 306965), (70810, 284258), (73138, 275210), (81577, 246740), (81965, 245572), (92053, 218660), (98020, 205349), (109330, 184106), (110084, 182845), (122786, 163930), (123370, 163154), (137605, 146276), (141620, 142129)]