20851785

素因数分解:

$3^2\times 5^1\times {\mathrm{47}}^1\times {\mathrm{9859}}^1$

素因数の和:9917

約数の個数: 24

約数和(自身を含む): 36915840

約数和(自身を除く): 16064055

約数列:

[1, 3, 5, 9, 15, 45, 47, 141, 235, 423, 705, 2115, 9859, 29577, 49295, 88731, 147885, 443655, 463373, 1390119, 2316865, 4170357, 6950595, 20851785]

約数ペア:

[(1, 20851785), (3, 6950595), (5, 4170357), (9, 2316865), (15, 1390119), (45, 463373), (47, 443655), (141, 147885), (235, 88731), (423, 49295), (705, 29577), (2115, 9859)]