20655565

素因数分解:

$5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{89}}^1\times {\mathrm{349}}^1$

素因数の和:469

約数の個数: 32

約数和(自身を含む): 30240000

約数和(自身を除く): 9584435

約数列:

[1, 5, 7, 19, 35, 89, 95, 133, 349, 445, 623, 665, 1691, 1745, 2443, 3115, 6631, 8455, 11837, 12215, 31061, 33155, 46417, 59185, 155305, 217427, 232085, 590159, 1087135, 2950795, 4131113, 20655565]

約数ペア:

[(1, 20655565), (5, 4131113), (7, 2950795), (19, 1087135), (35, 590159), (89, 232085), (95, 217427), (133, 155305), (349, 59185), (445, 46417), (623, 33155), (665, 31061), (1691, 12215), (1745, 11837), (2443, 8455), (3115, 6631)]