19164640

素因数分解:

$2^5\times 5^1\times {\mathrm{11}}^1\times {\mathrm{10889}}^1$

素因数の和:10915

約数の個数: 48

約数和(自身を含む): 49397040

約数和(自身を除く): 30232400

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 80, 88, 110, 160, 176, 220, 352, 440, 880, 1760, 10889, 21778, 43556, 54445, 87112, 108890, 119779, 174224, 217780, 239558, 348448, 435560, 479116, 598895, 871120, 958232, 1197790, 1742240, 1916464, 2395580, 3832928, 4791160, 9582320, 19164640]

約数ペア:

[(1, 19164640), (2, 9582320), (4, 4791160), (5, 3832928), (8, 2395580), (10, 1916464), (11, 1742240), (16, 1197790), (20, 958232), (22, 871120), (32, 598895), (40, 479116), (44, 435560), (55, 348448), (80, 239558), (88, 217780), (110, 174224), (160, 119779), (176, 108890), (220, 87112), (352, 54445), (440, 43556), (880, 21778), (1760, 10889)]