21131776

素因数分解:

$2^9\times {\mathrm{149}}^1\times {\mathrm{277}}^1$

素因数の和:444

約数の個数: 40

約数和(自身を含む): 42659100

約数和(自身を除く): 21527324

約数列:

[1, 2, 4, 8, 16, 32, 64, 128, 149, 256, 277, 298, 512, 554, 596, 1108, 1192, 2216, 2384, 4432, 4768, 8864, 9536, 17728, 19072, 35456, 38144, 41273, 70912, 76288, 82546, 141824, 165092, 330184, 660368, 1320736, 2641472, 5282944, 10565888, 21131776]

約数ペア:

[(1, 21131776), (2, 10565888), (4, 5282944), (8, 2641472), (16, 1320736), (32, 660368), (64, 330184), (128, 165092), (149, 141824), (256, 82546), (277, 76288), (298, 70912), (512, 41273), (554, 38144), (596, 35456), (1108, 19072), (1192, 17728), (2216, 9536), (2384, 8864), (4432, 4768)]