21821576

素因数分解:

$2^3\times 7^1\times {\mathrm{19}}^1\times {\mathrm{20509}}^1$

素因数の和:20541

約数の個数: 32

約数和(自身を含む): 49224000

約数和(自身を除く): 27402424

約数列:

[1, 2, 4, 7, 8, 14, 19, 28, 38, 56, 76, 133, 152, 266, 532, 1064, 20509, 41018, 82036, 143563, 164072, 287126, 389671, 574252, 779342, 1148504, 1558684, 2727697, 3117368, 5455394, 10910788, 21821576]

約数ペア:

[(1, 21821576), (2, 10910788), (4, 5455394), (7, 3117368), (8, 2727697), (14, 1558684), (19, 1148504), (28, 779342), (38, 574252), (56, 389671), (76, 287126), (133, 164072), (152, 143563), (266, 82036), (532, 41018), (1064, 20509)]