81913731

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{67}}^1\times {\mathrm{89}}^1\times {\mathrm{241}}^1$

素因数の和:419

約数の個数: 32

約数和(自身を含む): 118483200

約数和(自身を除く): 36569469

約数列:

[1, 3, 19, 57, 67, 89, 201, 241, 267, 723, 1273, 1691, 3819, 4579, 5073, 5963, 13737, 16147, 17889, 21449, 48441, 64347, 113297, 306793, 339891, 407531, 920379, 1222593, 1437083, 4311249, 27304577, 81913731]

約数ペア:

[(1, 81913731), (3, 27304577), (19, 4311249), (57, 1437083), (67, 1222593), (89, 920379), (201, 407531), (241, 339891), (267, 306793), (723, 113297), (1273, 64347), (1691, 48441), (3819, 21449), (4579, 17889), (5073, 16147), (5963, 13737)]