20704118120

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{379}}^1\times {\mathrm{5273}}^1$

素因数の和:5707

約数の個数: 128

約数和(自身を含む): 54832723200

約数和(自身を除く): 34128605080

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 37, 40, 56, 70, 74, 140, 148, 185, 259, 280, 296, 370, 379, 518, 740, 758, 1036, 1295, 1480, 1516, 1895, 2072, 2590, 2653, 3032, 3790, 5180, 5273, 5306, 7580, 10360, 10546, 10612, 13265, 14023, 15160, 21092, 21224, 26365, 26530, 28046, 36911, 42184, 52730, 53060, 56092, 70115, 73822, 98161, 105460, 106120, 112184, 140230, 147644, 184555, 195101, 196322, 210920, 280460, 295288, 369110, 390202, 392644, 490805, 560920, 738220, 780404, 785288, 975505, 981610, 1365707, 1476440, 1560808, 1951010, 1963220, 1998467, 2731414, 3902020, 3926440, 3996934, 5462828, 6828535, 7804040, 7993868, 9992335, 10925656, 13657070, 13989269, 15987736, 19984670, 27314140, 27978538, 39969340, 54628280, 55957076, 69946345, 73943279, 79938680, 111914152, 139892690, 147886558, 279785380, 295773116, 369716395, 517602953, 559570760, 591546232, 739432790, 1035205906, 1478865580, 2070411812, 2588014765, 2957731160, 4140823624, 5176029530, 10352059060, 20704118120]

約数ペア:

[(1, 20704118120), (2, 10352059060), (4, 5176029530), (5, 4140823624), (7, 2957731160), (8, 2588014765), (10, 2070411812), (14, 1478865580), (20, 1035205906), (28, 739432790), (35, 591546232), (37, 559570760), (40, 517602953), (56, 369716395), (70, 295773116), (74, 279785380), (140, 147886558), (148, 139892690), (185, 111914152), (259, 79938680), (280, 73943279), (296, 69946345), (370, 55957076), (379, 54628280), (518, 39969340), (740, 27978538), (758, 27314140), (1036, 19984670), (1295, 15987736), (1480, 13989269), (1516, 13657070), (1895, 10925656), (2072, 9992335), (2590, 7993868), (2653, 7804040), (3032, 6828535), (3790, 5462828), (5180, 3996934), (5273, 3926440), (5306, 3902020), (7580, 2731414), (10360, 1998467), (10546, 1963220), (10612, 1951010), (13265, 1560808), (14023, 1476440), (15160, 1365707), (21092, 981610), (21224, 975505), (26365, 785288), (26530, 780404), (28046, 738220), (36911, 560920), (42184, 490805), (52730, 392644), (53060, 390202), (56092, 369110), (70115, 295288), (73822, 280460), (98161, 210920), (105460, 196322), (106120, 195101), (112184, 184555), (140230, 147644)]