21309117

素因数分解:

$3^1\times {\mathrm{137}}^1\times {\mathrm{139}}^1\times {\mathrm{373}}^1$

素因数の和:652

約数の個数: 16

約数和(自身を含む): 28902720

約数和(自身を除く): 7593603

約数列:

[1, 3, 137, 139, 373, 411, 417, 1119, 19043, 51101, 51847, 57129, 153303, 155541, 7103039, 21309117]

約数ペア:

[(1, 21309117), (3, 7103039), (137, 155541), (139, 153303), (373, 57129), (411, 51847), (417, 51101), (1119, 19043)]