21665792

素因数分解:

$2^{11}\times {\mathrm{71}}^1\times {\mathrm{149}}^1$

素因数の和:242

約数の個数: 48

約数和(自身を含む): 44226000

約数和(自身を除く): 22560208

約数列:

[1, 2, 4, 8, 16, 32, 64, 71, 128, 142, 149, 256, 284, 298, 512, 568, 596, 1024, 1136, 1192, 2048, 2272, 2384, 4544, 4768, 9088, 9536, 10579, 18176, 19072, 21158, 36352, 38144, 42316, 72704, 76288, 84632, 145408, 152576, 169264, 305152, 338528, 677056, 1354112, 2708224, 5416448, 10832896, 21665792]

約数ペア:

[(1, 21665792), (2, 10832896), (4, 5416448), (8, 2708224), (16, 1354112), (32, 677056), (64, 338528), (71, 305152), (128, 169264), (142, 152576), (149, 145408), (256, 84632), (284, 76288), (298, 72704), (512, 42316), (568, 38144), (596, 36352), (1024, 21158), (1136, 19072), (1192, 18176), (2048, 10579), (2272, 9536), (2384, 9088), (4544, 4768)]