20187908

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{557}}^1$

素因数の和:632

約数の個数: 48

約数和(自身を含む): 41341104

約数和(自身を除く): 21153196

約数列:

[1, 2, 4, 13, 17, 26, 34, 41, 52, 68, 82, 164, 221, 442, 533, 557, 697, 884, 1066, 1114, 1394, 2132, 2228, 2788, 7241, 9061, 9469, 14482, 18122, 18938, 22837, 28964, 36244, 37876, 45674, 91348, 123097, 246194, 296881, 388229, 492388, 593762, 776458, 1187524, 1552916, 5046977, 10093954, 20187908]

約数ペア:

[(1, 20187908), (2, 10093954), (4, 5046977), (13, 1552916), (17, 1187524), (26, 776458), (34, 593762), (41, 492388), (52, 388229), (68, 296881), (82, 246194), (164, 123097), (221, 91348), (442, 45674), (533, 37876), (557, 36244), (697, 28964), (884, 22837), (1066, 18938), (1114, 18122), (1394, 14482), (2132, 9469), (2228, 9061), (2788, 7241)]