81021408

素因数分解:

$2^5\times 3^1\times {\mathrm{13}}^1\times {\mathrm{64921}}^1$

素因数の和:64947

約数の個数: 48

約数和(自身を含む): 229044816

約数和(自身を除く): 148023408

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 16, 24, 26, 32, 39, 48, 52, 78, 96, 104, 156, 208, 312, 416, 624, 1248, 64921, 129842, 194763, 259684, 389526, 519368, 779052, 843973, 1038736, 1558104, 1687946, 2077472, 2531919, 3116208, 3375892, 5063838, 6232416, 6751784, 10127676, 13503568, 20255352, 27007136, 40510704, 81021408]

約数ペア:

[(1, 81021408), (2, 40510704), (3, 27007136), (4, 20255352), (6, 13503568), (8, 10127676), (12, 6751784), (13, 6232416), (16, 5063838), (24, 3375892), (26, 3116208), (32, 2531919), (39, 2077472), (48, 1687946), (52, 1558104), (78, 1038736), (96, 843973), (104, 779052), (156, 519368), (208, 389526), (312, 259684), (416, 194763), (624, 129842), (1248, 64921)]