640260

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{3557}}^1$

素因数の和:3572

約数の個数: 36

約数和(自身を含む): 1942668

約数和(自身を除く): 1302408

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 3557, 7114, 10671, 14228, 17785, 21342, 32013, 35570, 42684, 53355, 64026, 71140, 106710, 128052, 160065, 213420, 320130, 640260]

約数ペア:

[(1, 640260), (2, 320130), (3, 213420), (4, 160065), (5, 128052), (6, 106710), (9, 71140), (10, 64026), (12, 53355), (15, 42684), (18, 35570), (20, 32013), (30, 21342), (36, 17785), (45, 14228), (60, 10671), (90, 7114), (180, 3557)]