20458818

素因数分解:

$2^1\times 3^4\times {\mathrm{47}}^1\times {\mathrm{2687}}^1$

素因数の和:2748

約数の個数: 40

約数和(自身を含む): 46835712

約数和(自身を除く): 26376894

約数列:

[1, 2, 3, 6, 9, 18, 27, 47, 54, 81, 94, 141, 162, 282, 423, 846, 1269, 2538, 2687, 3807, 5374, 7614, 8061, 16122, 24183, 48366, 72549, 126289, 145098, 217647, 252578, 378867, 435294, 757734, 1136601, 2273202, 3409803, 6819606, 10229409, 20458818]

約数ペア:

[(1, 20458818), (2, 10229409), (3, 6819606), (6, 3409803), (9, 2273202), (18, 1136601), (27, 757734), (47, 435294), (54, 378867), (81, 252578), (94, 217647), (141, 145098), (162, 126289), (282, 72549), (423, 48366), (846, 24183), (1269, 16122), (2538, 8061), (2687, 7614), (3807, 5374)]