21010215

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{82393}}^1$

素因数の和:82418

約数の個数: 16

約数和(自身を含む): 35594208

約数和(自身を除く): 14583993

約数列:

[1, 3, 5, 15, 17, 51, 85, 255, 82393, 247179, 411965, 1235895, 1400681, 4202043, 7003405, 21010215]

約数ペア:

[(1, 21010215), (3, 7003405), (5, 4202043), (15, 1400681), (17, 1235895), (51, 411965), (85, 247179), (255, 82393)]