20090505

素因数分解:

$3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{157}}^1\times {\mathrm{449}}^1$

素因数の和:633

約数の個数: 32

約数和(自身を含む): 34128000

約数和(自身を除く): 14037495

約数列:

[1, 3, 5, 15, 19, 57, 95, 157, 285, 449, 471, 785, 1347, 2245, 2355, 2983, 6735, 8531, 8949, 14915, 25593, 42655, 44745, 70493, 127965, 211479, 352465, 1057395, 1339367, 4018101, 6696835, 20090505]

約数ペア:

[(1, 20090505), (3, 6696835), (5, 4018101), (15, 1339367), (19, 1057395), (57, 352465), (95, 211479), (157, 127965), (285, 70493), (449, 44745), (471, 42655), (785, 25593), (1347, 14915), (2245, 8949), (2355, 8531), (2983, 6735)]