21303928

素因数分解:

$2^3\times {\mathrm{41}}^1\times {\mathrm{64951}}^1$

素因数の和:64998

約数の個数: 16

約数和(自身を含む): 40919760

約数和(自身を除く): 19615832

約数列:

[1, 2, 4, 8, 41, 82, 164, 328, 64951, 129902, 259804, 519608, 2662991, 5325982, 10651964, 21303928]

約数ペア:

[(1, 21303928), (2, 10651964), (4, 5325982), (8, 2662991), (41, 519608), (82, 259804), (164, 129902), (328, 64951)]