20214765

素因数分解:

$3^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{71}}^1$

素因数の和:144

約数の個数: 80

約数和(自身を含む): 39726720

約数和(自身を除く): 19511955

約数列:

[1, 3, 5, 9, 15, 19, 27, 37, 45, 57, 71, 81, 95, 111, 135, 171, 185, 213, 285, 333, 355, 405, 513, 555, 639, 703, 855, 999, 1065, 1349, 1539, 1665, 1917, 2109, 2565, 2627, 2997, 3195, 3515, 4047, 4995, 5751, 6327, 6745, 7695, 7881, 9585, 10545, 12141, 13135, 14985, 18981, 20235, 23643, 28755, 31635, 36423, 39405, 49913, 56943, 60705, 70929, 94905, 109269, 118215, 149739, 182115, 212787, 249565, 284715, 354645, 449217, 546345, 748695, 1063935, 1347651, 2246085, 4042953, 6738255, 20214765]

約数ペア:

[(1, 20214765), (3, 6738255), (5, 4042953), (9, 2246085), (15, 1347651), (19, 1063935), (27, 748695), (37, 546345), (45, 449217), (57, 354645), (71, 284715), (81, 249565), (95, 212787), (111, 182115), (135, 149739), (171, 118215), (185, 109269), (213, 94905), (285, 70929), (333, 60705), (355, 56943), (405, 49913), (513, 39405), (555, 36423), (639, 31635), (703, 28755), (855, 23643), (999, 20235), (1065, 18981), (1349, 14985), (1539, 13135), (1665, 12141), (1917, 10545), (2109, 9585), (2565, 7881), (2627, 7695), (2997, 6745), (3195, 6327), (3515, 5751), (4047, 4995)]