21227208

素因数分解:

$2^3\times 3^1\times {\mathrm{43}}^1\times {\mathrm{67}}^1\times {\mathrm{307}}^1$

素因数の和:426

約数の個数: 64

約数和(自身を含む): 55292160

約数和(自身を除く): 34064952

約数列:

[1, 2, 3, 4, 6, 8, 12, 24, 43, 67, 86, 129, 134, 172, 201, 258, 268, 307, 344, 402, 516, 536, 614, 804, 921, 1032, 1228, 1608, 1842, 2456, 2881, 3684, 5762, 7368, 8643, 11524, 13201, 17286, 20569, 23048, 26402, 34572, 39603, 41138, 52804, 61707, 69144, 79206, 82276, 105608, 123414, 158412, 164552, 246828, 316824, 493656, 884467, 1768934, 2653401, 3537868, 5306802, 7075736, 10613604, 21227208]

約数ペア:

[(1, 21227208), (2, 10613604), (3, 7075736), (4, 5306802), (6, 3537868), (8, 2653401), (12, 1768934), (24, 884467), (43, 493656), (67, 316824), (86, 246828), (129, 164552), (134, 158412), (172, 123414), (201, 105608), (258, 82276), (268, 79206), (307, 69144), (344, 61707), (402, 52804), (516, 41138), (536, 39603), (614, 34572), (804, 26402), (921, 23048), (1032, 20569), (1228, 17286), (1608, 13201), (1842, 11524), (2456, 8643), (2881, 7368), (3684, 5762)]