21081915

素因数分解:

$3^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{20369}}^1$

素因数の和:20403

約数の個数: 24

約数和(自身を含む): 38132640

約数和(自身を除く): 17050725

約数列:

[1, 3, 5, 9, 15, 23, 45, 69, 115, 207, 345, 1035, 20369, 61107, 101845, 183321, 305535, 468487, 916605, 1405461, 2342435, 4216383, 7027305, 21081915]

約数ペア:

[(1, 21081915), (3, 7027305), (5, 4216383), (9, 2342435), (15, 1405461), (23, 916605), (45, 468487), (69, 305535), (115, 183321), (207, 101845), (345, 61107), (1035, 20369)]