21501005

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{443}}^1\times {\mathrm{571}}^1$

素因数の和:1036

約数の個数: 16

約数和(自身を含む): 27428544

約数和(自身を除く): 5927539

約数列:

[1, 5, 17, 85, 443, 571, 2215, 2855, 7531, 9707, 37655, 48535, 252953, 1264765, 4300201, 21501005]

約数ペア:

[(1, 21501005), (5, 4300201), (17, 1264765), (85, 252953), (443, 48535), (571, 37655), (2215, 9707), (2855, 7531)]