19795815

素因数分解:

$3^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{19}}^1\times {\mathrm{137}}^1$

素因数の和:193

約数の個数: 72

約数和(自身を含む): 39396240

約数和(自身を除く): 19600425

約数列:

[1, 3, 5, 9, 13, 15, 19, 39, 45, 57, 65, 95, 117, 137, 169, 171, 195, 247, 285, 411, 507, 585, 685, 741, 845, 855, 1233, 1235, 1521, 1781, 2055, 2223, 2535, 2603, 3211, 3705, 5343, 6165, 7605, 7809, 8905, 9633, 11115, 13015, 16029, 16055, 23153, 23427, 26715, 28899, 33839, 39045, 48165, 69459, 80145, 101517, 115765, 117135, 144495, 169195, 208377, 304551, 347295, 439907, 507585, 1041885, 1319721, 1522755, 2199535, 3959163, 6598605, 19795815]

約数ペア:

[(1, 19795815), (3, 6598605), (5, 3959163), (9, 2199535), (13, 1522755), (15, 1319721), (19, 1041885), (39, 507585), (45, 439907), (57, 347295), (65, 304551), (95, 208377), (117, 169195), (137, 144495), (169, 117135), (171, 115765), (195, 101517), (247, 80145), (285, 69459), (411, 48165), (507, 39045), (585, 33839), (685, 28899), (741, 26715), (845, 23427), (855, 23153), (1233, 16055), (1235, 16029), (1521, 13015), (1781, 11115), (2055, 9633), (2223, 8905), (2535, 7809), (2603, 7605), (3211, 6165), (3705, 5343)]