21145216

素因数分解:

$2^7\times {\mathrm{233}}^1\times {\mathrm{709}}^1$

素因数の和:956

約数の個数: 32

約数和(自身を含む): 42365700

約数和(自身を除く): 21220484

約数列:

[1, 2, 4, 8, 16, 32, 64, 128, 233, 466, 709, 932, 1418, 1864, 2836, 3728, 5672, 7456, 11344, 14912, 22688, 29824, 45376, 90752, 165197, 330394, 660788, 1321576, 2643152, 5286304, 10572608, 21145216]

約数ペア:

[(1, 21145216), (2, 10572608), (4, 5286304), (8, 2643152), (16, 1321576), (32, 660788), (64, 330394), (128, 165197), (233, 90752), (466, 45376), (709, 29824), (932, 22688), (1418, 14912), (1864, 11344), (2836, 7456), (3728, 5672)]