19867376

素因数分解:

$2^4\times {\mathrm{43}}^1\times {\mathrm{67}}^1\times {\mathrm{431}}^1$

素因数の和:549

約数の個数: 40

約数和(自身を含む): 40068864

約数和(自身を除く): 20201488

約数列:

[1, 2, 4, 8, 16, 43, 67, 86, 134, 172, 268, 344, 431, 536, 688, 862, 1072, 1724, 2881, 3448, 5762, 6896, 11524, 18533, 23048, 28877, 37066, 46096, 57754, 74132, 115508, 148264, 231016, 296528, 462032, 1241711, 2483422, 4966844, 9933688, 19867376]

約数ペア:

[(1, 19867376), (2, 9933688), (4, 4966844), (8, 2483422), (16, 1241711), (43, 462032), (67, 296528), (86, 231016), (134, 148264), (172, 115508), (268, 74132), (344, 57754), (431, 46096), (536, 37066), (688, 28877), (862, 23048), (1072, 18533), (1724, 11524), (2881, 6896), (3448, 5762)]