72620821

素因数分解:

$7^1\times {\mathrm{13}}^2\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{157}}^1$

素因数の和:230

約数の個数: 48

約数和(自身を含む): 99926784

約数和(自身を除く): 27305963

約数列:

[1, 7, 13, 17, 23, 91, 119, 157, 161, 169, 221, 299, 391, 1099, 1183, 1547, 2041, 2093, 2669, 2737, 2873, 3611, 3887, 5083, 14287, 18683, 20111, 25277, 26533, 27209, 34697, 35581, 46943, 61387, 66079, 185731, 242879, 328601, 429709, 451061, 462553, 610259, 798031, 3157427, 4271813, 5586217, 10374403, 72620821]

約数ペア:

[(1, 72620821), (7, 10374403), (13, 5586217), (17, 4271813), (23, 3157427), (91, 798031), (119, 610259), (157, 462553), (161, 451061), (169, 429709), (221, 328601), (299, 242879), (391, 185731), (1099, 66079), (1183, 61387), (1547, 46943), (2041, 35581), (2093, 34697), (2669, 27209), (2737, 26533), (2873, 25277), (3611, 20111), (3887, 18683), (5083, 14287)]