20993512

素因数分解:

$2^3\times {\mathrm{53}}^1\times {\mathrm{67}}^1\times {\mathrm{739}}^1$

素因数の和:865

約数の個数: 32

約数和(自身を含む): 40759200

約数和(自身を除く): 19765688

約数列:

[1, 2, 4, 8, 53, 67, 106, 134, 212, 268, 424, 536, 739, 1478, 2956, 3551, 5912, 7102, 14204, 28408, 39167, 49513, 78334, 99026, 156668, 198052, 313336, 396104, 2624189, 5248378, 10496756, 20993512]

約数ペア:

[(1, 20993512), (2, 10496756), (4, 5248378), (8, 2624189), (53, 396104), (67, 313336), (106, 198052), (134, 156668), (212, 99026), (268, 78334), (424, 49513), (536, 39167), (739, 28408), (1478, 14204), (2956, 7102), (3551, 5912)]