21201515

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{107}}^1\times {\mathrm{1723}}^1$

素因数の和:1858

約数の個数: 16

約数和(自身を含む): 26811648

約数和(自身を除く): 5610133

約数列:

[1, 5, 23, 107, 115, 535, 1723, 2461, 8615, 12305, 39629, 184361, 198145, 921805, 4240303, 21201515]

約数ペア:

[(1, 21201515), (5, 4240303), (23, 921805), (107, 198145), (115, 184361), (535, 39629), (1723, 12305), (2461, 8615)]