20416336

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{239}}^1\times {\mathrm{281}}^1$

素因数の和:547

約数の個数: 40

約数和(自身を含む): 41961600

約数和(自身を除く): 21545264

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 152, 239, 281, 304, 478, 562, 956, 1124, 1912, 2248, 3824, 4496, 4541, 5339, 9082, 10678, 18164, 21356, 36328, 42712, 67159, 72656, 85424, 134318, 268636, 537272, 1074544, 1276021, 2552042, 5104084, 10208168, 20416336]

約数ペア:

[(1, 20416336), (2, 10208168), (4, 5104084), (8, 2552042), (16, 1276021), (19, 1074544), (38, 537272), (76, 268636), (152, 134318), (239, 85424), (281, 72656), (304, 67159), (478, 42712), (562, 36328), (956, 21356), (1124, 18164), (1912, 10678), (2248, 9082), (3824, 5339), (4496, 4541)]