21404469

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{137}}^1\times {\mathrm{2741}}^1$

素因数の和:2900

約数の個数: 16

約数和(自身を含む): 30271680

約数和(自身を除く): 8867211

約数列:

[1, 3, 19, 57, 137, 411, 2603, 2741, 7809, 8223, 52079, 156237, 375517, 1126551, 7134823, 21404469]

約数ペア:

[(1, 21404469), (3, 7134823), (19, 1126551), (57, 375517), (137, 156237), (411, 52079), (2603, 8223), (2741, 7809)]