20123251960

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{79943}}^1$

素因数の和:80021

約数の個数: 128

約数和(自身を含む): 55257292800

約数和(自身を除く): 35134040840

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 29, 31, 35, 40, 56, 58, 62, 70, 116, 124, 140, 145, 155, 203, 217, 232, 248, 280, 290, 310, 406, 434, 580, 620, 812, 868, 899, 1015, 1085, 1160, 1240, 1624, 1736, 1798, 2030, 2170, 3596, 4060, 4340, 4495, 6293, 7192, 8120, 8680, 8990, 12586, 17980, 25172, 31465, 35960, 50344, 62930, 79943, 125860, 159886, 251720, 319772, 399715, 559601, 639544, 799430, 1119202, 1598860, 2238404, 2318347, 2478233, 2798005, 3197720, 4476808, 4636694, 4956466, 5596010, 9273388, 9912932, 11192020, 11591735, 12391165, 16228429, 17347631, 18546776, 19825864, 22384040, 23183470, 24782330, 32456858, 34695262, 46366940, 49564660, 64913716, 69390524, 71868757, 81142145, 86738155, 92733880, 99129320, 129827432, 138781048, 143737514, 162284290, 173476310, 287475028, 324568580, 346952620, 359343785, 503081299, 574950056, 649137160, 693905240, 718687570, 1006162598, 1437375140, 2012325196, 2515406495, 2874750280, 4024650392, 5030812990, 10061625980, 20123251960]

約数ペア:

[(1, 20123251960), (2, 10061625980), (4, 5030812990), (5, 4024650392), (7, 2874750280), (8, 2515406495), (10, 2012325196), (14, 1437375140), (20, 1006162598), (28, 718687570), (29, 693905240), (31, 649137160), (35, 574950056), (40, 503081299), (56, 359343785), (58, 346952620), (62, 324568580), (70, 287475028), (116, 173476310), (124, 162284290), (140, 143737514), (145, 138781048), (155, 129827432), (203, 99129320), (217, 92733880), (232, 86738155), (248, 81142145), (280, 71868757), (290, 69390524), (310, 64913716), (406, 49564660), (434, 46366940), (580, 34695262), (620, 32456858), (812, 24782330), (868, 23183470), (899, 22384040), (1015, 19825864), (1085, 18546776), (1160, 17347631), (1240, 16228429), (1624, 12391165), (1736, 11591735), (1798, 11192020), (2030, 9912932), (2170, 9273388), (3596, 5596010), (4060, 4956466), (4340, 4636694), (4495, 4476808), (6293, 3197720), (7192, 2798005), (8120, 2478233), (8680, 2318347), (8990, 2238404), (12586, 1598860), (17980, 1119202), (25172, 799430), (31465, 639544), (35960, 559601), (50344, 399715), (62930, 319772), (79943, 251720), (125860, 159886)]