20541640

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{73363}}^1$

素因数の和:73381

約数の個数: 32

約数和(自身を含む): 52822080

約数和(自身を除く): 32280440

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 73363, 146726, 293452, 366815, 513541, 586904, 733630, 1027082, 1467260, 2054164, 2567705, 2934520, 4108328, 5135410, 10270820, 20541640]

約数ペア:

[(1, 20541640), (2, 10270820), (4, 5135410), (5, 4108328), (7, 2934520), (8, 2567705), (10, 2054164), (14, 1467260), (20, 1027082), (28, 733630), (35, 586904), (40, 513541), (56, 366815), (70, 293452), (140, 146726), (280, 73363)]