81617776

素因数分解:

$2^4\times {\mathrm{521}}^1\times {\mathrm{9791}}^1$

素因数の和:10320

約数の個数: 20

約数和(自身を含む): 158454144

約数和(自身を除く): 76836368

約数列:

[1, 2, 4, 8, 16, 521, 1042, 2084, 4168, 8336, 9791, 19582, 39164, 78328, 156656, 5101111, 10202222, 20404444, 40808888, 81617776]

約数ペア:

[(1, 81617776), (2, 40808888), (4, 20404444), (8, 10202222), (16, 5101111), (521, 156656), (1042, 78328), (2084, 39164), (4168, 19582), (8336, 9791)]