21104655

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{9839}}^1$

素因数の和:9871

約数の個数: 32

約数和(自身を含む): 39674880

約数和(自身を除く): 18570225

約数列:

[1, 3, 5, 11, 13, 15, 33, 39, 55, 65, 143, 165, 195, 429, 715, 2145, 9839, 29517, 49195, 108229, 127907, 147585, 324687, 383721, 541145, 639535, 1406977, 1623435, 1918605, 4220931, 7034885, 21104655]

約数ペア:

[(1, 21104655), (3, 7034885), (5, 4220931), (11, 1918605), (13, 1623435), (15, 1406977), (33, 639535), (39, 541145), (55, 383721), (65, 324687), (143, 147585), (165, 127907), (195, 108229), (429, 49195), (715, 29517), (2145, 9839)]