399394516

素因数分解:

$2^2\times {\mathrm{19}}^2\times {\mathrm{276589}}^1$

素因数の和:276631

約数の個数: 18

約数和(自身を含む): 737665530

約数和(自身を除く): 338271014

約数列:

[1, 2, 4, 19, 38, 76, 361, 722, 1444, 276589, 553178, 1106356, 5255191, 10510382, 21020764, 99848629, 199697258, 399394516]

約数ペア:

[(1, 399394516), (2, 199697258), (4, 99848629), (19, 21020764), (38, 10510382), (76, 5255191), (361, 1106356), (722, 553178), (1444, 276589)]