21354544

素因数分解:

$2^4\times {\mathrm{47}}^1\times {\mathrm{73}}^1\times {\mathrm{389}}^1$

素因数の和:517

約数の個数: 40

約数和(自身を含む): 42943680

約数和(自身を除く): 21589136

約数列:

[1, 2, 4, 8, 16, 47, 73, 94, 146, 188, 292, 376, 389, 584, 752, 778, 1168, 1556, 3112, 3431, 6224, 6862, 13724, 18283, 27448, 28397, 36566, 54896, 56794, 73132, 113588, 146264, 227176, 292528, 454352, 1334659, 2669318, 5338636, 10677272, 21354544]

約数ペア:

[(1, 21354544), (2, 10677272), (4, 5338636), (8, 2669318), (16, 1334659), (47, 454352), (73, 292528), (94, 227176), (146, 146264), (188, 113588), (292, 73132), (376, 56794), (389, 54896), (584, 36566), (752, 28397), (778, 27448), (1168, 18283), (1556, 13724), (3112, 6862), (3431, 6224)]