81479905

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{149}}^1\times {\mathrm{179}}^1$

素因数の和:393

約数の個数: 32

約数和(自身を含む): 108864000

約数和(自身を除く): 27384095

約数列:

[1, 5, 13, 47, 65, 149, 179, 235, 611, 745, 895, 1937, 2327, 3055, 7003, 8413, 9685, 11635, 26671, 35015, 42065, 91039, 109369, 133355, 346723, 455195, 546845, 1253537, 1733615, 6267685, 16295981, 81479905]

約数ペア:

[(1, 81479905), (5, 16295981), (13, 6267685), (47, 1733615), (65, 1253537), (149, 546845), (179, 455195), (235, 346723), (611, 133355), (745, 109369), (895, 91039), (1937, 42065), (2327, 35015), (3055, 26671), (7003, 11635), (8413, 9685)]