20319968

素因数分解:

$2^5\times {\mathrm{19}}^2\times {\mathrm{1759}}^1$

素因数の和:1807

約数の個数: 36

約数和(自身を含む): 42245280

約数和(自身を除く): 21925312

約数列:

[1, 2, 4, 8, 16, 19, 32, 38, 76, 152, 304, 361, 608, 722, 1444, 1759, 2888, 3518, 5776, 7036, 11552, 14072, 28144, 33421, 56288, 66842, 133684, 267368, 534736, 634999, 1069472, 1269998, 2539996, 5079992, 10159984, 20319968]

約数ペア:

[(1, 20319968), (2, 10159984), (4, 5079992), (8, 2539996), (16, 1269998), (19, 1069472), (32, 634999), (38, 534736), (76, 267368), (152, 133684), (304, 66842), (361, 56288), (608, 33421), (722, 28144), (1444, 14072), (1759, 11552), (2888, 7036), (3518, 5776)]