21086686

素因数分解:

$2^1\times {\mathrm{53}}^1\times {\mathrm{331}}^1\times {\mathrm{601}}^1$

素因数の和:987

約数の個数: 16

約数和(自身を含む): 32377968

約数和(自身を除く): 11291282

約数列:

[1, 2, 53, 106, 331, 601, 662, 1202, 17543, 31853, 35086, 63706, 198931, 397862, 10543343, 21086686]

約数ペア:

[(1, 21086686), (2, 10543343), (53, 397862), (106, 198931), (331, 63706), (601, 35086), (662, 31853), (1202, 17543)]