20742840

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{157}}^1\times {\mathrm{367}}^1$

素因数の和:541

約数の個数: 96

約数和(自身を含む): 68028480

約数和(自身を除く): 47285640

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 30, 36, 40, 45, 60, 72, 90, 120, 157, 180, 314, 360, 367, 471, 628, 734, 785, 942, 1101, 1256, 1413, 1468, 1570, 1835, 1884, 2202, 2355, 2826, 2936, 3140, 3303, 3670, 3768, 4404, 4710, 5505, 5652, 6280, 6606, 7065, 7340, 8808, 9420, 11010, 11304, 13212, 14130, 14680, 16515, 18840, 22020, 26424, 28260, 33030, 44040, 56520, 57619, 66060, 115238, 132120, 172857, 230476, 288095, 345714, 460952, 518571, 576190, 691428, 864285, 1037142, 1152380, 1382856, 1728570, 2074284, 2304760, 2592855, 3457140, 4148568, 5185710, 6914280, 10371420, 20742840]

約数ペア:

[(1, 20742840), (2, 10371420), (3, 6914280), (4, 5185710), (5, 4148568), (6, 3457140), (8, 2592855), (9, 2304760), (10, 2074284), (12, 1728570), (15, 1382856), (18, 1152380), (20, 1037142), (24, 864285), (30, 691428), (36, 576190), (40, 518571), (45, 460952), (60, 345714), (72, 288095), (90, 230476), (120, 172857), (157, 132120), (180, 115238), (314, 66060), (360, 57619), (367, 56520), (471, 44040), (628, 33030), (734, 28260), (785, 26424), (942, 22020), (1101, 18840), (1256, 16515), (1413, 14680), (1468, 14130), (1570, 13212), (1835, 11304), (1884, 11010), (2202, 9420), (2355, 8808), (2826, 7340), (2936, 7065), (3140, 6606), (3303, 6280), (3670, 5652), (3768, 5505), (4404, 4710)]