780650

素因数分解:

$2^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{1201}}^1$

素因数の和:1226

約数の個数: 24

約数和(自身を含む): 1565004

約数和(自身を除く): 784354

約数列:

[1, 2, 5, 10, 13, 25, 26, 50, 65, 130, 325, 650, 1201, 2402, 6005, 12010, 15613, 30025, 31226, 60050, 78065, 156130, 390325, 780650]

約数ペア:

[(1, 780650), (2, 390325), (5, 156130), (10, 78065), (13, 60050), (25, 31226), (26, 30025), (50, 15613), (65, 12010), (130, 6005), (325, 2402), (650, 1201)]