81999915

素因数分解:

$3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{149}}^1\times {\mathrm{1931}}^1$

素因数の和:2107

約数の個数: 32

約数和(自身を含む): 139104000

約数和(自身を除く): 57104085

約数列:

[1, 3, 5, 15, 19, 57, 95, 149, 285, 447, 745, 1931, 2235, 2831, 5793, 8493, 9655, 14155, 28965, 36689, 42465, 110067, 183445, 287719, 550335, 863157, 1438595, 4315785, 5466661, 16399983, 27333305, 81999915]

約数ペア:

[(1, 81999915), (3, 27333305), (5, 16399983), (15, 5466661), (19, 4315785), (57, 1438595), (95, 863157), (149, 550335), (285, 287719), (447, 183445), (745, 110067), (1931, 42465), (2235, 36689), (2831, 28965), (5793, 14155), (8493, 9655)]