21155704

素因数分解:

$2^3\times {\mathrm{83}}^1\times {\mathrm{151}}^1\times {\mathrm{211}}^1$

素因数の和:451

約数の個数: 32

約数和(自身を含む): 40602240

約数和(自身を除く): 19446536

約数列:

[1, 2, 4, 8, 83, 151, 166, 211, 302, 332, 422, 604, 664, 844, 1208, 1688, 12533, 17513, 25066, 31861, 35026, 50132, 63722, 70052, 100264, 127444, 140104, 254888, 2644463, 5288926, 10577852, 21155704]

約数ペア:

[(1, 21155704), (2, 10577852), (4, 5288926), (8, 2644463), (83, 254888), (151, 140104), (166, 127444), (211, 100264), (302, 70052), (332, 63722), (422, 50132), (604, 35026), (664, 31861), (844, 25066), (1208, 17513), (1688, 12533)]