639969381

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{1283}}^1\times {\mathrm{2917}}^1$

素因数の和:4225

約数の個数: 24

約数和(自身を含む): 974145120

約数和(自身を除く): 334175739

約数列:

[1, 3, 9, 19, 57, 171, 1283, 2917, 3849, 8751, 11547, 24377, 26253, 55423, 73131, 166269, 219393, 498807, 3742511, 11227533, 33682599, 71107709, 213323127, 639969381]

約数ペア:

[(1, 639969381), (3, 213323127), (9, 71107709), (19, 33682599), (57, 11227533), (171, 3742511), (1283, 498807), (2917, 219393), (3849, 166269), (8751, 73131), (11547, 55423), (24377, 26253)]