31668260

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{349}}^2$

素因数の和:720

約数の個数: 36

約数和(自身を含む): 71824788

約数和(自身を除く): 40156528

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 349, 698, 1396, 1745, 3490, 4537, 6980, 9074, 18148, 22685, 45370, 90740, 121801, 243602, 487204, 609005, 1218010, 1583413, 2436020, 3166826, 6333652, 7917065, 15834130, 31668260]

約数ペア:

[(1, 31668260), (2, 15834130), (4, 7917065), (5, 6333652), (10, 3166826), (13, 2436020), (20, 1583413), (26, 1218010), (52, 609005), (65, 487204), (130, 243602), (260, 121801), (349, 90740), (698, 45370), (1396, 22685), (1745, 18148), (3490, 9074), (4537, 6980)]