21958312

素因数分解:

$2^3\times {\mathrm{67}}^1\times {\mathrm{71}}^1\times {\mathrm{577}}^1$

素因数の和:721

約数の個数: 32

約数和(自身を含む): 42448320

約数和(自身を除く): 20490008

約数列:

[1, 2, 4, 8, 67, 71, 134, 142, 268, 284, 536, 568, 577, 1154, 2308, 4616, 4757, 9514, 19028, 38056, 38659, 40967, 77318, 81934, 154636, 163868, 309272, 327736, 2744789, 5489578, 10979156, 21958312]

約数ペア:

[(1, 21958312), (2, 10979156), (4, 5489578), (8, 2744789), (67, 327736), (71, 309272), (134, 163868), (142, 154636), (268, 81934), (284, 77318), (536, 40967), (568, 38659), (577, 38056), (1154, 19028), (2308, 9514), (4616, 4757)]