21380458940

素因数分解:

$2^2\times 5^1\times {\mathrm{59}}^1\times {\mathrm{193}}^1\times {\mathrm{269}}^1\times {\mathrm{349}}^1$

素因数の和:879

約数の個数: 96

約数和(自身を含む): 46199160000

約数和(自身を除く): 24818701060

約数列:

[1, 2, 4, 5, 10, 20, 59, 118, 193, 236, 269, 295, 349, 386, 538, 590, 698, 772, 965, 1076, 1180, 1345, 1396, 1745, 1930, 2690, 3490, 3860, 5380, 6980, 11387, 15871, 20591, 22774, 31742, 41182, 45548, 51917, 56935, 63484, 67357, 79355, 82364, 93881, 102955, 103834, 113870, 134714, 158710, 187762, 205910, 207668, 227740, 259585, 269428, 317420, 336785, 375524, 411820, 469405, 519170, 673570, 938810, 1038340, 1347140, 1877620, 3063103, 3974063, 5538979, 6126206, 7948126, 11077958, 12252412, 15315515, 15896252, 18119033, 19870315, 22155916, 27694895, 30631030, 36238066, 39740630, 55389790, 61262060, 72476132, 79481260, 90595165, 110779580, 181190330, 362380660, 1069022947, 2138045894, 4276091788, 5345114735, 10690229470, 21380458940]

約数ペア:

[(1, 21380458940), (2, 10690229470), (4, 5345114735), (5, 4276091788), (10, 2138045894), (20, 1069022947), (59, 362380660), (118, 181190330), (193, 110779580), (236, 90595165), (269, 79481260), (295, 72476132), (349, 61262060), (386, 55389790), (538, 39740630), (590, 36238066), (698, 30631030), (772, 27694895), (965, 22155916), (1076, 19870315), (1180, 18119033), (1345, 15896252), (1396, 15315515), (1745, 12252412), (1930, 11077958), (2690, 7948126), (3490, 6126206), (3860, 5538979), (5380, 3974063), (6980, 3063103), (11387, 1877620), (15871, 1347140), (20591, 1038340), (22774, 938810), (31742, 673570), (41182, 519170), (45548, 469405), (51917, 411820), (56935, 375524), (63484, 336785), (67357, 317420), (79355, 269428), (82364, 259585), (93881, 227740), (102955, 207668), (103834, 205910), (113870, 187762), (134714, 158710)]