257779760

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{569}}^1\times {\mathrm{809}}^1$

素因数の和:1398

約数の個数: 80

約数和(自身を含む): 687009600

約数和(自身を除く): 429229840

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 569, 809, 1138, 1618, 2276, 2845, 3236, 3983, 4045, 4552, 5663, 5690, 6472, 7966, 8090, 9104, 11326, 11380, 12944, 15932, 16180, 19915, 22652, 22760, 28315, 31864, 32360, 39830, 45304, 45520, 56630, 63728, 64720, 79660, 90608, 113260, 159320, 226520, 318640, 453040, 460321, 920642, 1841284, 2301605, 3222247, 3682568, 4603210, 6444494, 7365136, 9206420, 12888988, 16111235, 18412840, 25777976, 32222470, 36825680, 51555952, 64444940, 128889880, 257779760]

約数ペア:

[(1, 257779760), (2, 128889880), (4, 64444940), (5, 51555952), (7, 36825680), (8, 32222470), (10, 25777976), (14, 18412840), (16, 16111235), (20, 12888988), (28, 9206420), (35, 7365136), (40, 6444494), (56, 4603210), (70, 3682568), (80, 3222247), (112, 2301605), (140, 1841284), (280, 920642), (560, 460321), (569, 453040), (809, 318640), (1138, 226520), (1618, 159320), (2276, 113260), (2845, 90608), (3236, 79660), (3983, 64720), (4045, 63728), (4552, 56630), (5663, 45520), (5690, 45304), (6472, 39830), (7966, 32360), (8090, 31864), (9104, 28315), (11326, 22760), (11380, 22652), (12944, 19915), (15932, 16180)]