20801145

素因数分解:

$3^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{149}}^1\times {\mathrm{227}}^1$

素因数の和:425

約数の個数: 32

約数和(自身を含む): 34473600

約数和(自身を除く): 13672455

約数列:

[1, 3, 5, 15, 41, 123, 149, 205, 227, 447, 615, 681, 745, 1135, 2235, 3405, 6109, 9307, 18327, 27921, 30545, 33823, 46535, 91635, 101469, 139605, 169115, 507345, 1386743, 4160229, 6933715, 20801145]

約数ペア:

[(1, 20801145), (3, 6933715), (5, 4160229), (15, 1386743), (41, 507345), (123, 169115), (149, 139605), (205, 101469), (227, 91635), (447, 46535), (615, 33823), (681, 30545), (745, 27921), (1135, 18327), (2235, 9307), (3405, 6109)]