18981240

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{367}}^1\times {\mathrm{431}}^1$

素因数の和:812

約数の個数: 64

約数和(自身を含む): 57231360

約数和(自身を除く): 38250120

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 367, 431, 734, 862, 1101, 1293, 1468, 1724, 1835, 2155, 2202, 2586, 2936, 3448, 3670, 4310, 4404, 5172, 5505, 6465, 7340, 8620, 8808, 10344, 11010, 12930, 14680, 17240, 22020, 25860, 44040, 51720, 158177, 316354, 474531, 632708, 790885, 949062, 1265416, 1581770, 1898124, 2372655, 3163540, 3796248, 4745310, 6327080, 9490620, 18981240]

約数ペア:

[(1, 18981240), (2, 9490620), (3, 6327080), (4, 4745310), (5, 3796248), (6, 3163540), (8, 2372655), (10, 1898124), (12, 1581770), (15, 1265416), (20, 949062), (24, 790885), (30, 632708), (40, 474531), (60, 316354), (120, 158177), (367, 51720), (431, 44040), (734, 25860), (862, 22020), (1101, 17240), (1293, 14680), (1468, 12930), (1724, 11010), (1835, 10344), (2155, 8808), (2202, 8620), (2586, 7340), (2936, 6465), (3448, 5505), (3670, 5172), (4310, 4404)]