18317817

素因数分解:

$3^2\times 7^2\times {\mathrm{73}}^1\times {\mathrm{569}}^1$

素因数の和:662

約数の個数: 36

約数和(自身を含む): 31255380

約数和(自身を除く): 12937563

約数列:

[1, 3, 7, 9, 21, 49, 63, 73, 147, 219, 441, 511, 569, 657, 1533, 1707, 3577, 3983, 4599, 5121, 10731, 11949, 27881, 32193, 35847, 41537, 83643, 124611, 250929, 290759, 373833, 872277, 2035313, 2616831, 6105939, 18317817]

約数ペア:

[(1, 18317817), (3, 6105939), (7, 2616831), (9, 2035313), (21, 872277), (49, 373833), (63, 290759), (73, 250929), (147, 124611), (219, 83643), (441, 41537), (511, 35847), (569, 32193), (657, 27881), (1533, 11949), (1707, 10731), (3577, 5121), (3983, 4599)]