21949408

素因数分解:

$2^5\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{2777}}^1$

素因数の和:2819

約数の個数: 48

約数和(自身を含む): 49003920

約数和(自身を除く): 27054512

約数列:

[1, 2, 4, 8, 13, 16, 19, 26, 32, 38, 52, 76, 104, 152, 208, 247, 304, 416, 494, 608, 988, 1976, 2777, 3952, 5554, 7904, 11108, 22216, 36101, 44432, 52763, 72202, 88864, 105526, 144404, 211052, 288808, 422104, 577616, 685919, 844208, 1155232, 1371838, 1688416, 2743676, 5487352, 10974704, 21949408]

約数ペア:

[(1, 21949408), (2, 10974704), (4, 5487352), (8, 2743676), (13, 1688416), (16, 1371838), (19, 1155232), (26, 844208), (32, 685919), (38, 577616), (52, 422104), (76, 288808), (104, 211052), (152, 144404), (208, 105526), (247, 88864), (304, 72202), (416, 52763), (494, 44432), (608, 36101), (988, 22216), (1976, 11108), (2777, 7904), (3952, 5554)]