812721

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^2\times {\mathrm{229}}^1$

素因数の和:265

約数の個数: 24

約数和(自身を含む): 1346880

約数和(自身を除く): 534159

約数列:

[1, 3, 7, 13, 21, 39, 91, 169, 229, 273, 507, 687, 1183, 1603, 2977, 3549, 4809, 8931, 20839, 38701, 62517, 116103, 270907, 812721]

約数ペア:

[(1, 812721), (3, 270907), (7, 116103), (13, 62517), (21, 38701), (39, 20839), (91, 8931), (169, 4809), (229, 3549), (273, 2977), (507, 1603), (687, 1183)]