20641725

素因数分解:

$3^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{7057}}^1$

素因数の和:7086

約数の個数: 36

約数和(自身を含む): 39821236

約数和(自身を除く): 19179511

約数列:

[1, 3, 5, 9, 13, 15, 25, 39, 45, 65, 75, 117, 195, 225, 325, 585, 975, 2925, 7057, 21171, 35285, 63513, 91741, 105855, 176425, 275223, 317565, 458705, 529275, 825669, 1376115, 1587825, 2293525, 4128345, 6880575, 20641725]

約数ペア:

[(1, 20641725), (3, 6880575), (5, 4128345), (9, 2293525), (13, 1587825), (15, 1376115), (25, 825669), (39, 529275), (45, 458705), (65, 317565), (75, 275223), (117, 176425), (195, 105855), (225, 91741), (325, 63513), (585, 35285), (975, 21171), (2925, 7057)]