21053045

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{17047}}^1$

素因数の和:17084

約数の個数: 16

約数和(自身を含む): 28640640

約数和(自身を除く): 7587595

約数列:

[1, 5, 13, 19, 65, 95, 247, 1235, 17047, 85235, 221611, 323893, 1108055, 1619465, 4210609, 21053045]

約数ペア:

[(1, 21053045), (5, 4210609), (13, 1619465), (19, 1108055), (65, 323893), (95, 221611), (247, 85235), (1235, 17047)]