20701515

素因数分解:

$3^1\times 5^1\times {\mathrm{41}}^2\times {\mathrm{821}}^1$

素因数の和:911

約数の個数: 24

約数和(自身を含む): 33991344

約数和(自身を除く): 13289829

約数列:

[1, 3, 5, 15, 41, 123, 205, 615, 821, 1681, 2463, 4105, 5043, 8405, 12315, 25215, 33661, 100983, 168305, 504915, 1380101, 4140303, 6900505, 20701515]

約数ペア:

[(1, 20701515), (3, 6900505), (5, 4140303), (15, 1380101), (41, 504915), (123, 168305), (205, 100983), (615, 33661), (821, 25215), (1681, 12315), (2463, 8405), (4105, 5043)]