398966974

素因数分解:

$2^1\times 7^1\times {\mathrm{139}}^1\times {\mathrm{205019}}^1$

素因数の和:205167

約数の個数: 16

約数和(自身を含む): 688867200

約数和(自身を除く): 289900226

約数列:

[1, 2, 7, 14, 139, 278, 973, 1946, 205019, 410038, 1435133, 2870266, 28497641, 56995282, 199483487, 398966974]

約数ペア:

[(1, 398966974), (2, 199483487), (7, 56995282), (14, 28497641), (139, 2870266), (278, 1435133), (973, 410038), (1946, 205019)]