178589980

素因数分解:

$2^2\times 5^1\times {\mathrm{139}}^1\times {\mathrm{227}}^1\times {\mathrm{283}}^1$

素因数の和:658

約数の個数: 48

約数和(自身を含む): 380741760

約数和(自身を除く): 202151780

約数列:

[1, 2, 4, 5, 10, 20, 139, 227, 278, 283, 454, 556, 566, 695, 908, 1132, 1135, 1390, 1415, 2270, 2780, 2830, 4540, 5660, 31553, 39337, 63106, 64241, 78674, 126212, 128482, 157348, 157765, 196685, 256964, 315530, 321205, 393370, 631060, 642410, 786740, 1284820, 8929499, 17858998, 35717996, 44647495, 89294990, 178589980]

約数ペア:

[(1, 178589980), (2, 89294990), (4, 44647495), (5, 35717996), (10, 17858998), (20, 8929499), (139, 1284820), (227, 786740), (278, 642410), (283, 631060), (454, 393370), (556, 321205), (566, 315530), (695, 256964), (908, 196685), (1132, 157765), (1135, 157348), (1390, 128482), (1415, 126212), (2270, 78674), (2780, 64241), (2830, 63106), (4540, 39337), (5660, 31553)]