20412665

素因数分解:

$5^1\times 7^2\times {\mathrm{13}}^2\times {\mathrm{17}}^1\times {\mathrm{29}}^1$

素因数の和:91

約数の個数: 72

約数和(自身を含む): 33796440

約数和(自身を除く): 13383775

約数列:

[1, 5, 7, 13, 17, 29, 35, 49, 65, 85, 91, 119, 145, 169, 203, 221, 245, 377, 455, 493, 595, 637, 833, 845, 1015, 1105, 1183, 1421, 1547, 1885, 2465, 2639, 2873, 3185, 3451, 4165, 4901, 5915, 6409, 7105, 7735, 8281, 10829, 13195, 14365, 17255, 18473, 20111, 24157, 24505, 32045, 34307, 41405, 44863, 54145, 83317, 92365, 100555, 120785, 140777, 171535, 224315, 240149, 314041, 416585, 583219, 703885, 1200745, 1570205, 2916095, 4082533, 20412665]

約数ペア:

[(1, 20412665), (5, 4082533), (7, 2916095), (13, 1570205), (17, 1200745), (29, 703885), (35, 583219), (49, 416585), (65, 314041), (85, 240149), (91, 224315), (119, 171535), (145, 140777), (169, 120785), (203, 100555), (221, 92365), (245, 83317), (377, 54145), (455, 44863), (493, 41405), (595, 34307), (637, 32045), (833, 24505), (845, 24157), (1015, 20111), (1105, 18473), (1183, 17255), (1421, 14365), (1547, 13195), (1885, 10829), (2465, 8281), (2639, 7735), (2873, 7105), (3185, 6409), (3451, 5915), (4165, 4901)]