21436912

素因数分解:

$2^4\times 7^2\times {\mathrm{37}}^1\times {\mathrm{739}}^1$

素因数の和:798

約数の個数: 60

約数和(自身を含む): 49688040

約数和(自身を除く): 28251128

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 37, 49, 56, 74, 98, 112, 148, 196, 259, 296, 392, 518, 592, 739, 784, 1036, 1478, 1813, 2072, 2956, 3626, 4144, 5173, 5912, 7252, 10346, 11824, 14504, 20692, 27343, 29008, 36211, 41384, 54686, 72422, 82768, 109372, 144844, 191401, 218744, 289688, 382802, 437488, 579376, 765604, 1339807, 1531208, 2679614, 3062416, 5359228, 10718456, 21436912]

約数ペア:

[(1, 21436912), (2, 10718456), (4, 5359228), (7, 3062416), (8, 2679614), (14, 1531208), (16, 1339807), (28, 765604), (37, 579376), (49, 437488), (56, 382802), (74, 289688), (98, 218744), (112, 191401), (148, 144844), (196, 109372), (259, 82768), (296, 72422), (392, 54686), (518, 41384), (592, 36211), (739, 29008), (784, 27343), (1036, 20692), (1478, 14504), (1813, 11824), (2072, 10346), (2956, 7252), (3626, 5912), (4144, 5173)]