21999903

素因数分解:

$3^1\times {\mathrm{41}}^1\times {\mathrm{383}}^1\times {\mathrm{467}}^1$

素因数の和:894

約数の個数: 16

約数和(自身を含む): 30191616

約数和(自身を除く): 8191713

約数列:

[1, 3, 41, 123, 383, 467, 1149, 1401, 15703, 19147, 47109, 57441, 178861, 536583, 7333301, 21999903]

約数ペア:

[(1, 21999903), (3, 7333301), (41, 536583), (123, 178861), (383, 57441), (467, 47109), (1149, 19147), (1401, 15703)]