20099278360

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{113}}^1\times {\mathrm{635249}}^1$

素因数の和:635380

約数の個数: 64

約数和(自身を含む): 52141320000

約数和(自身を除く): 32042041640

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 113, 140, 226, 280, 452, 565, 791, 904, 1130, 1582, 2260, 3164, 3955, 4520, 6328, 7910, 15820, 31640, 635249, 1270498, 2540996, 3176245, 4446743, 5081992, 6352490, 8893486, 12704980, 17786972, 22233715, 25409960, 35573944, 44467430, 71783137, 88934860, 143566274, 177869720, 287132548, 358915685, 502481959, 574265096, 717831370, 1004963918, 1435662740, 2009927836, 2512409795, 2871325480, 4019855672, 5024819590, 10049639180, 20099278360]

約数ペア:

[(1, 20099278360), (2, 10049639180), (4, 5024819590), (5, 4019855672), (7, 2871325480), (8, 2512409795), (10, 2009927836), (14, 1435662740), (20, 1004963918), (28, 717831370), (35, 574265096), (40, 502481959), (56, 358915685), (70, 287132548), (113, 177869720), (140, 143566274), (226, 88934860), (280, 71783137), (452, 44467430), (565, 35573944), (791, 25409960), (904, 22233715), (1130, 17786972), (1582, 12704980), (2260, 8893486), (3164, 6352490), (3955, 5081992), (4520, 4446743), (6328, 3176245), (7910, 2540996), (15820, 1270498), (31640, 635249)]