19705257

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{251}}^1$

素因数の和:342

約数の個数: 48

約数和(自身を含む): 34122816

約数和(自身を除く): 14417559

約数列:

[1, 3, 9, 11, 13, 33, 39, 61, 99, 117, 143, 183, 251, 429, 549, 671, 753, 793, 1287, 2013, 2259, 2379, 2761, 3263, 6039, 7137, 8283, 8723, 9789, 15311, 24849, 26169, 29367, 35893, 45933, 78507, 107679, 137799, 168421, 199043, 323037, 505263, 597129, 1515789, 1791387, 2189473, 6568419, 19705257]

約数ペア:

[(1, 19705257), (3, 6568419), (9, 2189473), (11, 1791387), (13, 1515789), (33, 597129), (39, 505263), (61, 323037), (99, 199043), (117, 168421), (143, 137799), (183, 107679), (251, 78507), (429, 45933), (549, 35893), (671, 29367), (753, 26169), (793, 24849), (1287, 15311), (2013, 9789), (2259, 8723), (2379, 8283), (2761, 7137), (3263, 6039)]