21557861872

素因数分解:

$2^4\times {\mathrm{137}}^1\times {\mathrm{499}}^1\times {\mathrm{19709}}^1$

素因数の和:20353

約数の個数: 40

約数和(自身を含む): 42159690000

約数和(自身を除く): 20601828128

約数列:

[1, 2, 4, 8, 16, 137, 274, 499, 548, 998, 1096, 1996, 2192, 3992, 7984, 19709, 39418, 68363, 78836, 136726, 157672, 273452, 315344, 546904, 1093808, 2700133, 5400266, 9834791, 10800532, 19669582, 21601064, 39339164, 43202128, 78678328, 157356656, 1347366367, 2694732734, 5389465468, 10778930936, 21557861872]

約数ペア:

[(1, 21557861872), (2, 10778930936), (4, 5389465468), (8, 2694732734), (16, 1347366367), (137, 157356656), (274, 78678328), (499, 43202128), (548, 39339164), (998, 21601064), (1096, 19669582), (1996, 10800532), (2192, 9834791), (3992, 5400266), (7984, 2700133), (19709, 1093808), (39418, 546904), (68363, 315344), (78836, 273452), (136726, 157672)]