257804920

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{127}}^1\times {\mathrm{2671}}^1$

素因数の和:2828

約数の個数: 64

約数和(自身を含む): 615628800

約数和(自身を除く): 357823880

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 127, 152, 190, 254, 380, 508, 635, 760, 1016, 1270, 2413, 2540, 2671, 4826, 5080, 5342, 9652, 10684, 12065, 13355, 19304, 21368, 24130, 26710, 48260, 50749, 53420, 96520, 101498, 106840, 202996, 253745, 339217, 405992, 507490, 678434, 1014980, 1356868, 1696085, 2029960, 2713736, 3392170, 6445123, 6784340, 12890246, 13568680, 25780492, 32225615, 51560984, 64451230, 128902460, 257804920]

約数ペア:

[(1, 257804920), (2, 128902460), (4, 64451230), (5, 51560984), (8, 32225615), (10, 25780492), (19, 13568680), (20, 12890246), (38, 6784340), (40, 6445123), (76, 3392170), (95, 2713736), (127, 2029960), (152, 1696085), (190, 1356868), (254, 1014980), (380, 678434), (508, 507490), (635, 405992), (760, 339217), (1016, 253745), (1270, 202996), (2413, 106840), (2540, 101498), (2671, 96520), (4826, 53420), (5080, 50749), (5342, 48260), (9652, 26710), (10684, 24130), (12065, 21368), (13355, 19304)]