20536640

素因数分解:

$2^6\times 5^1\times {\mathrm{29}}^1\times {\mathrm{2213}}^1$

素因数の和:2259

約数の個数: 56

約数和(自身を含む): 50612040

約数和(自身を除く): 30075400

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 29, 32, 40, 58, 64, 80, 116, 145, 160, 232, 290, 320, 464, 580, 928, 1160, 1856, 2213, 2320, 4426, 4640, 8852, 9280, 11065, 17704, 22130, 35408, 44260, 64177, 70816, 88520, 128354, 141632, 177040, 256708, 320885, 354080, 513416, 641770, 708160, 1026832, 1283540, 2053664, 2567080, 4107328, 5134160, 10268320, 20536640]

約数ペア:

[(1, 20536640), (2, 10268320), (4, 5134160), (5, 4107328), (8, 2567080), (10, 2053664), (16, 1283540), (20, 1026832), (29, 708160), (32, 641770), (40, 513416), (58, 354080), (64, 320885), (80, 256708), (116, 177040), (145, 141632), (160, 128354), (232, 88520), (290, 70816), (320, 64177), (464, 44260), (580, 35408), (928, 22130), (1160, 17704), (1856, 11065), (2213, 9280), (2320, 8852), (4426, 4640)]