18708315

素因数分解:

$3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{211}}^1\times {\mathrm{257}}^1$

素因数の和:499

約数の個数: 32

約数和(自身を含む): 31504896

約数和(自身を除く): 12796581

約数列:

[1, 3, 5, 15, 23, 69, 115, 211, 257, 345, 633, 771, 1055, 1285, 3165, 3855, 4853, 5911, 14559, 17733, 24265, 29555, 54227, 72795, 88665, 162681, 271135, 813405, 1247221, 3741663, 6236105, 18708315]

約数ペア:

[(1, 18708315), (3, 6236105), (5, 3741663), (15, 1247221), (23, 813405), (69, 271135), (115, 162681), (211, 88665), (257, 72795), (345, 54227), (633, 29555), (771, 24265), (1055, 17733), (1285, 14559), (3165, 5911), (3855, 4853)]