20797455

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{4831}}^1$

素因数の和:4887

約数の個数: 32

約数和(自身を含む): 38965248

約数和(自身を除く): 18167793

約数列:

[1, 3, 5, 7, 15, 21, 35, 41, 105, 123, 205, 287, 615, 861, 1435, 4305, 4831, 14493, 24155, 33817, 72465, 101451, 169085, 198071, 507255, 594213, 990355, 1386497, 2971065, 4159491, 6932485, 20797455]

約数ペア:

[(1, 20797455), (3, 6932485), (5, 4159491), (7, 2971065), (15, 1386497), (21, 990355), (35, 594213), (41, 507255), (105, 198071), (123, 169085), (205, 101451), (287, 72465), (615, 33817), (861, 24155), (1435, 14493), (4305, 4831)]