209401231880

素因数分解:

$2^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{7057}}^1\times {\mathrm{12161}}^1$

素因数の和:19290

約数の個数: 64

約数和(自身を含む): 478983829680

約数和(自身を除く): 269582597800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61, 122, 244, 305, 488, 610, 1220, 2440, 7057, 12161, 14114, 24322, 28228, 35285, 48644, 56456, 60805, 70570, 97288, 121610, 141140, 243220, 282280, 430477, 486440, 741821, 860954, 1483642, 1721908, 2152385, 2967284, 3443816, 3709105, 4304770, 5934568, 7418210, 8609540, 14836420, 17219080, 29672840, 85820177, 171640354, 343280708, 429100885, 686561416, 858201770, 1716403540, 3432807080, 5235030797, 10470061594, 20940123188, 26175153985, 41880246376, 52350307970, 104700615940, 209401231880]

約数ペア:

[(1, 209401231880), (2, 104700615940), (4, 52350307970), (5, 41880246376), (8, 26175153985), (10, 20940123188), (20, 10470061594), (40, 5235030797), (61, 3432807080), (122, 1716403540), (244, 858201770), (305, 686561416), (488, 429100885), (610, 343280708), (1220, 171640354), (2440, 85820177), (7057, 29672840), (12161, 17219080), (14114, 14836420), (24322, 8609540), (28228, 7418210), (35285, 5934568), (48644, 4304770), (56456, 3709105), (60805, 3443816), (70570, 2967284), (97288, 2152385), (121610, 1721908), (141140, 1483642), (243220, 860954), (282280, 741821), (430477, 486440)]