20128976

素因数分解:

$2^4\times 7^1\times {\mathrm{53}}^1\times {\mathrm{3391}}^1$

素因数の和:3459

約数の個数: 40

約数和(自身を含む): 45425664

約数和(自身を除く): 25296688

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 53, 56, 106, 112, 212, 371, 424, 742, 848, 1484, 2968, 3391, 5936, 6782, 13564, 23737, 27128, 47474, 54256, 94948, 179723, 189896, 359446, 379792, 718892, 1258061, 1437784, 2516122, 2875568, 5032244, 10064488, 20128976]

約数ペア:

[(1, 20128976), (2, 10064488), (4, 5032244), (7, 2875568), (8, 2516122), (14, 1437784), (16, 1258061), (28, 718892), (53, 379792), (56, 359446), (106, 189896), (112, 179723), (212, 94948), (371, 54256), (424, 47474), (742, 27128), (848, 23737), (1484, 13564), (2968, 6782), (3391, 5936)]