21280084

素因数分解:

$2^2\times 7^1\times {\mathrm{29}}^1\times {\mathrm{73}}^1\times {\mathrm{359}}^1$

素因数の和:472

約数の個数: 48

約数和(自身を含む): 44755200

約数和(自身を除く): 23475116

約数列:

[1, 2, 4, 7, 14, 28, 29, 58, 73, 116, 146, 203, 292, 359, 406, 511, 718, 812, 1022, 1436, 2044, 2117, 2513, 4234, 5026, 8468, 10052, 10411, 14819, 20822, 26207, 29638, 41644, 52414, 59276, 72877, 104828, 145754, 183449, 291508, 366898, 733796, 760003, 1520006, 3040012, 5320021, 10640042, 21280084]

約数ペア:

[(1, 21280084), (2, 10640042), (4, 5320021), (7, 3040012), (14, 1520006), (28, 760003), (29, 733796), (58, 366898), (73, 291508), (116, 183449), (146, 145754), (203, 104828), (292, 72877), (359, 59276), (406, 52414), (511, 41644), (718, 29638), (812, 26207), (1022, 20822), (1436, 14819), (2044, 10411), (2117, 10052), (2513, 8468), (4234, 5026)]