20580345

素因数分解:

$3^3\times 5^1\times {\mathrm{157}}^1\times {\mathrm{971}}^1$

素因数の和:1142

約数の個数: 32

約数和(自身を含む): 36858240

約数和(自身を除く): 16277895

約数列:

[1, 3, 5, 9, 15, 27, 45, 135, 157, 471, 785, 971, 1413, 2355, 2913, 4239, 4855, 7065, 8739, 14565, 21195, 26217, 43695, 131085, 152447, 457341, 762235, 1372023, 2286705, 4116069, 6860115, 20580345]

約数ペア:

[(1, 20580345), (3, 6860115), (5, 4116069), (9, 2286705), (15, 1372023), (27, 762235), (45, 457341), (135, 152447), (157, 131085), (471, 43695), (785, 26217), (971, 21195), (1413, 14565), (2355, 8739), (2913, 7065), (4239, 4855)]