18560165

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{151}}^1$

素因数の和:261

約数の個数: 32

約数和(自身を含む): 25331712

約数和(自身を除く): 6771547

約数列:

[1, 5, 13, 31, 61, 65, 151, 155, 305, 403, 755, 793, 1891, 1963, 2015, 3965, 4681, 9211, 9455, 9815, 23405, 24583, 46055, 60853, 119743, 122915, 285541, 304265, 598715, 1427705, 3712033, 18560165]

約数ペア:

[(1, 18560165), (5, 3712033), (13, 1427705), (31, 598715), (61, 304265), (65, 285541), (151, 122915), (155, 119743), (305, 60853), (403, 46055), (755, 24583), (793, 23405), (1891, 9815), (1963, 9455), (2015, 9211), (3965, 4681)]