71453860

素因数分解:

$2^2\times 5^1\times {\mathrm{73}}^1\times {\mathrm{109}}^1\times {\mathrm{449}}^1$

素因数の和:640

約数の個数: 48

約数和(自身を含む): 153846000

約数和(自身を除く): 82392140

約数列:

[1, 2, 4, 5, 10, 20, 73, 109, 146, 218, 292, 365, 436, 449, 545, 730, 898, 1090, 1460, 1796, 2180, 2245, 4490, 7957, 8980, 15914, 31828, 32777, 39785, 48941, 65554, 79570, 97882, 131108, 159140, 163885, 195764, 244705, 327770, 489410, 655540, 978820, 3572693, 7145386, 14290772, 17863465, 35726930, 71453860]

約数ペア:

[(1, 71453860), (2, 35726930), (4, 17863465), (5, 14290772), (10, 7145386), (20, 3572693), (73, 978820), (109, 655540), (146, 489410), (218, 327770), (292, 244705), (365, 195764), (436, 163885), (449, 159140), (545, 131108), (730, 97882), (898, 79570), (1090, 65554), (1460, 48941), (1796, 39785), (2180, 32777), (2245, 31828), (4490, 15914), (7957, 8980)]