260650

素因数分解:

$2^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{401}}^1$

素因数の和:426

約数の個数: 24

約数和(自身を含む): 523404

約数和(自身を除く): 262754

約数列:

[1, 2, 5, 10, 13, 25, 26, 50, 65, 130, 325, 401, 650, 802, 2005, 4010, 5213, 10025, 10426, 20050, 26065, 52130, 130325, 260650]

約数ペア:

[(1, 260650), (2, 130325), (5, 52130), (10, 26065), (13, 20050), (25, 10426), (26, 10025), (50, 5213), (65, 4010), (130, 2005), (325, 802), (401, 650)]