21403408

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{6053}}^1$

素因数の和:6091

約数の個数: 40

約数和(自身を含む): 47293848

約数和(自身を除く): 25890440

約数列:

[1, 2, 4, 8, 13, 16, 17, 26, 34, 52, 68, 104, 136, 208, 221, 272, 442, 884, 1768, 3536, 6053, 12106, 24212, 48424, 78689, 96848, 102901, 157378, 205802, 314756, 411604, 629512, 823208, 1259024, 1337713, 1646416, 2675426, 5350852, 10701704, 21403408]

約数ペア:

[(1, 21403408), (2, 10701704), (4, 5350852), (8, 2675426), (13, 1646416), (16, 1337713), (17, 1259024), (26, 823208), (34, 629512), (52, 411604), (68, 314756), (104, 205802), (136, 157378), (208, 102901), (221, 96848), (272, 78689), (442, 48424), (884, 24212), (1768, 12106), (3536, 6053)]