21211728

素因数分解:

$2^4\times 3^1\times {\mathrm{43}}^2\times {\mathrm{239}}^1$

素因数の和:336

約数の個数: 60

約数和(自身を含む): 56335680

約数和(自身を除く): 35123952

約数列:

[1, 2, 3, 4, 6, 8, 12, 16, 24, 43, 48, 86, 129, 172, 239, 258, 344, 478, 516, 688, 717, 956, 1032, 1434, 1849, 1912, 2064, 2868, 3698, 3824, 5547, 5736, 7396, 10277, 11094, 11472, 14792, 20554, 22188, 29584, 30831, 41108, 44376, 61662, 82216, 88752, 123324, 164432, 246648, 441911, 493296, 883822, 1325733, 1767644, 2651466, 3535288, 5302932, 7070576, 10605864, 21211728]

約数ペア:

[(1, 21211728), (2, 10605864), (3, 7070576), (4, 5302932), (6, 3535288), (8, 2651466), (12, 1767644), (16, 1325733), (24, 883822), (43, 493296), (48, 441911), (86, 246648), (129, 164432), (172, 123324), (239, 88752), (258, 82216), (344, 61662), (478, 44376), (516, 41108), (688, 30831), (717, 29584), (956, 22188), (1032, 20554), (1434, 14792), (1849, 11472), (1912, 11094), (2064, 10277), (2868, 7396), (3698, 5736), (3824, 5547)]