20445615

素因数分解:

$3^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{2657}}^1$

素因数の和:2693

約数の個数: 40

約数和(自身を含む): 38594160

約数和(自身を除く): 18148545

約数列:

[1, 3, 5, 9, 15, 19, 27, 45, 57, 81, 95, 135, 171, 285, 405, 513, 855, 1539, 2565, 2657, 7695, 7971, 13285, 23913, 39855, 50483, 71739, 119565, 151449, 215217, 252415, 358695, 454347, 757245, 1076085, 1363041, 2271735, 4089123, 6815205, 20445615]

約数ペア:

[(1, 20445615), (3, 6815205), (5, 4089123), (9, 2271735), (15, 1363041), (19, 1076085), (27, 757245), (45, 454347), (57, 358695), (81, 252415), (95, 215217), (135, 151449), (171, 119565), (285, 71739), (405, 50483), (513, 39855), (855, 23913), (1539, 13285), (2565, 7971), (2657, 7695)]