18717540

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{157}}^1\times {\mathrm{1987}}^1$

素因数の和:2156

約数の個数: 48

約数和(自身を含む): 52769472

約数和(自身を除く): 34051932

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 157, 314, 471, 628, 785, 942, 1570, 1884, 1987, 2355, 3140, 3974, 4710, 5961, 7948, 9420, 9935, 11922, 19870, 23844, 29805, 39740, 59610, 119220, 311959, 623918, 935877, 1247836, 1559795, 1871754, 3119590, 3743508, 4679385, 6239180, 9358770, 18717540]

約数ペア:

[(1, 18717540), (2, 9358770), (3, 6239180), (4, 4679385), (5, 3743508), (6, 3119590), (10, 1871754), (12, 1559795), (15, 1247836), (20, 935877), (30, 623918), (60, 311959), (157, 119220), (314, 59610), (471, 39740), (628, 29805), (785, 23844), (942, 19870), (1570, 11922), (1884, 9935), (1987, 9420), (2355, 7948), (3140, 5961), (3974, 4710)]