18980313

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{1471}}^1$

素因数の和:1525

約数の個数: 32

約数和(自身を含む): 30523392

約数和(自身を除く): 11543079

約数列:

[1, 3, 11, 17, 23, 33, 51, 69, 187, 253, 391, 561, 759, 1173, 1471, 4301, 4413, 12903, 16181, 25007, 33833, 48543, 75021, 101499, 275077, 372163, 575161, 825231, 1116489, 1725483, 6326771, 18980313]

約数ペア:

[(1, 18980313), (3, 6326771), (11, 1725483), (17, 1116489), (23, 825231), (33, 575161), (51, 372163), (69, 275077), (187, 101499), (253, 75021), (391, 48543), (561, 33833), (759, 25007), (1173, 16181), (1471, 12903), (4301, 4413)]