20851754

素因数分解:

$2^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{29}}^2$

素因数の和:108

約数の個数: 72

約数和(自身を含む): 42895008

約数和(自身を除く): 22043254

約数列:

[1, 2, 7, 11, 14, 22, 23, 29, 46, 49, 58, 77, 98, 154, 161, 203, 253, 319, 322, 406, 506, 539, 638, 667, 841, 1078, 1127, 1334, 1421, 1682, 1771, 2233, 2254, 2842, 3542, 4466, 4669, 5887, 7337, 9251, 9338, 11774, 12397, 14674, 15631, 18502, 19343, 24794, 31262, 32683, 38686, 41209, 51359, 64757, 65366, 82418, 102718, 129514, 135401, 212773, 270802, 359513, 425546, 453299, 719026, 906598, 947807, 1489411, 1895614, 2978822, 10425877, 20851754]

約数ペア:

[(1, 20851754), (2, 10425877), (7, 2978822), (11, 1895614), (14, 1489411), (22, 947807), (23, 906598), (29, 719026), (46, 453299), (49, 425546), (58, 359513), (77, 270802), (98, 212773), (154, 135401), (161, 129514), (203, 102718), (253, 82418), (319, 65366), (322, 64757), (406, 51359), (506, 41209), (539, 38686), (638, 32683), (667, 31262), (841, 24794), (1078, 19343), (1127, 18502), (1334, 15631), (1421, 14674), (1682, 12397), (1771, 11774), (2233, 9338), (2254, 9251), (2842, 7337), (3542, 5887), (4466, 4669)]