12782020

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{751}}^1$

素因数の和:820

約数の個数: 48

約数和(自身を含む): 28804608

約数和(自身を除く): 16022588

約数列:

[1, 2, 4, 5, 10, 20, 23, 37, 46, 74, 92, 115, 148, 185, 230, 370, 460, 740, 751, 851, 1502, 1702, 3004, 3404, 3755, 4255, 7510, 8510, 15020, 17020, 17273, 27787, 34546, 55574, 69092, 86365, 111148, 138935, 172730, 277870, 345460, 555740, 639101, 1278202, 2556404, 3195505, 6391010, 12782020]

約数ペア:

[(1, 12782020), (2, 6391010), (4, 3195505), (5, 2556404), (10, 1278202), (20, 639101), (23, 555740), (37, 345460), (46, 277870), (74, 172730), (92, 138935), (115, 111148), (148, 86365), (185, 69092), (230, 55574), (370, 34546), (460, 27787), (740, 17273), (751, 17020), (851, 15020), (1502, 8510), (1702, 7510), (3004, 4255), (3404, 3755)]