20571057

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{103}}^1\times {\mathrm{569}}^1$

素因数の和:694

約数の個数: 32

約数和(自身を含む): 33196800

約数和(自身を除く): 12625743

約数列:

[1, 3, 9, 13, 27, 39, 103, 117, 309, 351, 569, 927, 1339, 1707, 2781, 4017, 5121, 7397, 12051, 15363, 22191, 36153, 58607, 66573, 175821, 199719, 527463, 761891, 1582389, 2285673, 6857019, 20571057]

約数ペア:

[(1, 20571057), (3, 6857019), (9, 2285673), (13, 1582389), (27, 761891), (39, 527463), (103, 199719), (117, 175821), (309, 66573), (351, 58607), (569, 36153), (927, 22191), (1339, 15363), (1707, 12051), (2781, 7397), (4017, 5121)]