640606287

素因数分解:

$3^1\times {\mathrm{47}}^1\times {\mathrm{1181}}^1\times {\mathrm{3847}}^1$

素因数の和:5078

約数の個数: 16

約数和(自身を含む): 873280512

約数和(自身を除く): 232674225

約数列:

[1, 3, 47, 141, 1181, 3543, 3847, 11541, 55507, 166521, 180809, 542427, 4543307, 13629921, 213535429, 640606287]

約数ペア:

[(1, 640606287), (3, 213535429), (47, 13629921), (141, 4543307), (1181, 542427), (3543, 180809), (3847, 166521), (11541, 55507)]