397936791

素因数分解:

$3^2\times 7^2\times {\mathrm{902351}}^1$

素因数の和:902371

約数の個数: 18

約数和(自身を含む): 668642832

約数和(自身を除く): 270706041

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 902351, 2707053, 6316457, 8121159, 18949371, 44215199, 56848113, 132645597, 397936791]

約数ペア:

[(1, 397936791), (3, 132645597), (7, 56848113), (9, 44215199), (21, 18949371), (49, 8121159), (63, 6316457), (147, 2707053), (441, 902351)]