18314680

素因数分解:

$2^3\times 5^1\times {\mathrm{53}}^2\times {\mathrm{163}}^1$

素因数の和:280

約数の個数: 48

約数和(自身を含む): 42257880

約数和(自身を除く): 23943200

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 53, 106, 163, 212, 265, 326, 424, 530, 652, 815, 1060, 1304, 1630, 2120, 2809, 3260, 5618, 6520, 8639, 11236, 14045, 17278, 22472, 28090, 34556, 43195, 56180, 69112, 86390, 112360, 172780, 345560, 457867, 915734, 1831468, 2289335, 3662936, 4578670, 9157340, 18314680]

約数ペア:

[(1, 18314680), (2, 9157340), (4, 4578670), (5, 3662936), (8, 2289335), (10, 1831468), (20, 915734), (40, 457867), (53, 345560), (106, 172780), (163, 112360), (212, 86390), (265, 69112), (326, 56180), (424, 43195), (530, 34556), (652, 28090), (815, 22472), (1060, 17278), (1304, 14045), (1630, 11236), (2120, 8639), (2809, 6520), (3260, 5618)]