20922705

素因数分解:

$3^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{2719}}^1$

素因数の和:2755

約数の個数: 40

約数和(自身を含む): 39494400

約数和(自身を除く): 18571695

約数列:

[1, 3, 5, 9, 15, 19, 27, 45, 57, 81, 95, 135, 171, 285, 405, 513, 855, 1539, 2565, 2719, 7695, 8157, 13595, 24471, 40785, 51661, 73413, 122355, 154983, 220239, 258305, 367065, 464949, 774915, 1101195, 1394847, 2324745, 4184541, 6974235, 20922705]

約数ペア:

[(1, 20922705), (3, 6974235), (5, 4184541), (9, 2324745), (15, 1394847), (19, 1101195), (27, 774915), (45, 464949), (57, 367065), (81, 258305), (95, 220239), (135, 154983), (171, 122355), (285, 73413), (405, 51661), (513, 40785), (855, 24471), (1539, 13595), (2565, 8157), (2719, 7695)]