397742457

素因数分解:

$3^1\times 7^4\times {\mathrm{55219}}^1$

素因数の和:55250

約数の個数: 20

約数和(自身を含む): 618684880

約数和(自身を除く): 220942423

約数列:

[1, 3, 7, 21, 49, 147, 343, 1029, 2401, 7203, 55219, 165657, 386533, 1159599, 2705731, 8117193, 18940117, 56820351, 132580819, 397742457]

約数ペア:

[(1, 397742457), (3, 132580819), (7, 56820351), (21, 18940117), (49, 8117193), (147, 2705731), (343, 1159599), (1029, 386533), (2401, 165657), (7203, 55219)]