20191275

素因数分解:

$3^4\times 5^2\times {\mathrm{13}}^2\times {\mathrm{59}}^1$

素因数の和:107

約数の個数: 90

約数和(自身を含む): 41185980

約数和(自身を除く): 20994705

約数列:

[1, 3, 5, 9, 13, 15, 25, 27, 39, 45, 59, 65, 75, 81, 117, 135, 169, 177, 195, 225, 295, 325, 351, 405, 507, 531, 585, 675, 767, 845, 885, 975, 1053, 1475, 1521, 1593, 1755, 2025, 2301, 2535, 2655, 2925, 3835, 4225, 4425, 4563, 4779, 5265, 6903, 7605, 7965, 8775, 9971, 11505, 12675, 13275, 13689, 19175, 20709, 22815, 23895, 26325, 29913, 34515, 38025, 39825, 49855, 57525, 62127, 68445, 89739, 103545, 114075, 119475, 149565, 172575, 249275, 269217, 310635, 342225, 448695, 517725, 747825, 807651, 1346085, 1553175, 2243475, 4038255, 6730425, 20191275]

約数ペア:

[(1, 20191275), (3, 6730425), (5, 4038255), (9, 2243475), (13, 1553175), (15, 1346085), (25, 807651), (27, 747825), (39, 517725), (45, 448695), (59, 342225), (65, 310635), (75, 269217), (81, 249275), (117, 172575), (135, 149565), (169, 119475), (177, 114075), (195, 103545), (225, 89739), (295, 68445), (325, 62127), (351, 57525), (405, 49855), (507, 39825), (531, 38025), (585, 34515), (675, 29913), (767, 26325), (845, 23895), (885, 22815), (975, 20709), (1053, 19175), (1475, 13689), (1521, 13275), (1593, 12675), (1755, 11505), (2025, 9971), (2301, 8775), (2535, 7965), (2655, 7605), (2925, 6903), (3835, 5265), (4225, 4779), (4425, 4563)]