64318640

素因数分解:

$2^4\times 5^1\times {\mathrm{79}}^1\times {\mathrm{10177}}^1$

素因数の和:10269

約数の個数: 40

約数和(自身を含む): 151448640

約数和(自身を除く): 87130000

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 79, 80, 158, 316, 395, 632, 790, 1264, 1580, 3160, 6320, 10177, 20354, 40708, 50885, 81416, 101770, 162832, 203540, 407080, 803983, 814160, 1607966, 3215932, 4019915, 6431864, 8039830, 12863728, 16079660, 32159320, 64318640]

約数ペア:

[(1, 64318640), (2, 32159320), (4, 16079660), (5, 12863728), (8, 8039830), (10, 6431864), (16, 4019915), (20, 3215932), (40, 1607966), (79, 814160), (80, 803983), (158, 407080), (316, 203540), (395, 162832), (632, 101770), (790, 81416), (1264, 50885), (1580, 40708), (3160, 20354), (6320, 10177)]