1282913920

素因数分解:

$2^7\times 5^1\times {\mathrm{31}}^1\times {\mathrm{64663}}^1$

素因数の和:64713

約数の個数: 64

約数和(自身を含む): 3165949440

約数和(自身を除く): 1883035520

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 124, 128, 155, 160, 248, 310, 320, 496, 620, 640, 992, 1240, 1984, 2480, 3968, 4960, 9920, 19840, 64663, 129326, 258652, 323315, 517304, 646630, 1034608, 1293260, 2004553, 2069216, 2586520, 4009106, 4138432, 5173040, 8018212, 8276864, 10022765, 10346080, 16036424, 20045530, 20692160, 32072848, 40091060, 41384320, 64145696, 80182120, 128291392, 160364240, 256582784, 320728480, 641456960, 1282913920]

約数ペア:

[(1, 1282913920), (2, 641456960), (4, 320728480), (5, 256582784), (8, 160364240), (10, 128291392), (16, 80182120), (20, 64145696), (31, 41384320), (32, 40091060), (40, 32072848), (62, 20692160), (64, 20045530), (80, 16036424), (124, 10346080), (128, 10022765), (155, 8276864), (160, 8018212), (248, 5173040), (310, 4138432), (320, 4009106), (496, 2586520), (620, 2069216), (640, 2004553), (992, 1293260), (1240, 1034608), (1984, 646630), (2480, 517304), (3968, 323315), (4960, 258652), (9920, 129326), (19840, 64663)]