18519865

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^2\times {\mathrm{31}}^1\times {\mathrm{101}}^1$

素因数の和:170

約数の個数: 48

約数和(自身を含む): 28670976

約数和(自身を除く): 10151111

約数列:

[1, 5, 7, 13, 31, 35, 65, 91, 101, 155, 169, 217, 403, 455, 505, 707, 845, 1085, 1183, 1313, 2015, 2821, 3131, 3535, 5239, 5915, 6565, 9191, 14105, 15655, 17069, 21917, 26195, 36673, 40703, 45955, 85345, 109585, 119483, 183365, 203515, 284921, 529139, 597415, 1424605, 2645695, 3703973, 18519865]

約数ペア:

[(1, 18519865), (5, 3703973), (7, 2645695), (13, 1424605), (31, 597415), (35, 529139), (65, 284921), (91, 203515), (101, 183365), (155, 119483), (169, 109585), (217, 85345), (403, 45955), (455, 40703), (505, 36673), (707, 26195), (845, 21917), (1085, 17069), (1183, 15655), (1313, 14105), (2015, 9191), (2821, 6565), (3131, 5915), (3535, 5239)]