21641308

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{113}}^1\times {\mathrm{127}}^1$

素因数の和:286

約数の個数: 48

約数和(自身を含む): 42900480

約数和(自身を除く): 21259172

約数列:

[1, 2, 4, 13, 26, 29, 52, 58, 113, 116, 127, 226, 254, 377, 452, 508, 754, 1469, 1508, 1651, 2938, 3277, 3302, 3683, 5876, 6554, 6604, 7366, 13108, 14351, 14732, 28702, 42601, 47879, 57404, 85202, 95758, 170404, 186563, 191516, 373126, 416179, 746252, 832358, 1664716, 5410327, 10820654, 21641308]

約数ペア:

[(1, 21641308), (2, 10820654), (4, 5410327), (13, 1664716), (26, 832358), (29, 746252), (52, 416179), (58, 373126), (113, 191516), (116, 186563), (127, 170404), (226, 95758), (254, 85202), (377, 57404), (452, 47879), (508, 42601), (754, 28702), (1469, 14732), (1508, 14351), (1651, 13108), (2938, 7366), (3277, 6604), (3302, 6554), (3683, 5876)]