20917754

素因数分解:

$2^1\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{109}}^1$

素因数の和:207

約数の個数: 48

約数和(自身を含む): 38096520

約数和(自身を除く): 17178766

約数列:

[1, 2, 11, 13, 22, 26, 61, 109, 121, 122, 143, 218, 242, 286, 671, 793, 1199, 1342, 1417, 1573, 1586, 2398, 2834, 3146, 6649, 7381, 8723, 13189, 13298, 14762, 15587, 17446, 26378, 31174, 73139, 86437, 95953, 146278, 171457, 172874, 191906, 342914, 804529, 950807, 1609058, 1901614, 10458877, 20917754]

約数ペア:

[(1, 20917754), (2, 10458877), (11, 1901614), (13, 1609058), (22, 950807), (26, 804529), (61, 342914), (109, 191906), (121, 172874), (122, 171457), (143, 146278), (218, 95953), (242, 86437), (286, 73139), (671, 31174), (793, 26378), (1199, 17446), (1342, 15587), (1417, 14762), (1573, 13298), (1586, 13189), (2398, 8723), (2834, 7381), (3146, 6649)]