21104645

素因数分解:

$5^1\times {\mathrm{31}}^1\times {\mathrm{47}}^1\times {\mathrm{2897}}^1$

素因数の和:2980

約数の個数: 16

約数和(自身を含む): 26707968

約数和(自身を除く): 5603323

約数列:

[1, 5, 31, 47, 155, 235, 1457, 2897, 7285, 14485, 89807, 136159, 449035, 680795, 4220929, 21104645]

約数ペア:

[(1, 21104645), (5, 4220929), (31, 680795), (47, 449035), (155, 136159), (235, 89807), (1457, 14485), (2897, 7285)]