690668

素因数分解:

$2^2\times {\mathrm{11}}^2\times {\mathrm{1427}}^1$

素因数の和:1453

約数の個数: 18

約数和(自身を含む): 1329468

約数和(自身を除く): 638800

約数列:

[1, 2, 4, 11, 22, 44, 121, 242, 484, 1427, 2854, 5708, 15697, 31394, 62788, 172667, 345334, 690668]

約数ペア:

[(1, 690668), (2, 345334), (4, 172667), (11, 62788), (22, 31394), (44, 15697), (121, 5708), (242, 2854), (484, 1427)]