66680660

素因数分解:

$2^2\times 5^1\times {\mathrm{37}}^1\times {\mathrm{251}}^1\times {\mathrm{359}}^1$

素因数の和:656

約数の個数: 48

約数和(自身を含む): 144789120

約数和(自身を除く): 78108460

約数列:

[1, 2, 4, 5, 10, 20, 37, 74, 148, 185, 251, 359, 370, 502, 718, 740, 1004, 1255, 1436, 1795, 2510, 3590, 5020, 7180, 9287, 13283, 18574, 26566, 37148, 46435, 53132, 66415, 90109, 92870, 132830, 180218, 185740, 265660, 360436, 450545, 901090, 1802180, 3334033, 6668066, 13336132, 16670165, 33340330, 66680660]

約数ペア:

[(1, 66680660), (2, 33340330), (4, 16670165), (5, 13336132), (10, 6668066), (20, 3334033), (37, 1802180), (74, 901090), (148, 450545), (185, 360436), (251, 265660), (359, 185740), (370, 180218), (502, 132830), (718, 92870), (740, 90109), (1004, 66415), (1255, 53132), (1436, 46435), (1795, 37148), (2510, 26566), (3590, 18574), (5020, 13283), (7180, 9287)]