64687376

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{310997}}^1$

素因数の和:311018

約数の個数: 20

約数和(自身を含む): 134973132

約数和(自身を除く): 70285756

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 310997, 621994, 1243988, 2487976, 4042961, 4975952, 8085922, 16171844, 32343688, 64687376]

約数ペア:

[(1, 64687376), (2, 32343688), (4, 16171844), (8, 8085922), (13, 4975952), (16, 4042961), (26, 2487976), (52, 1243988), (104, 621994), (208, 310997)]