20281260

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{157}}^1\times {\mathrm{2153}}^1$

素因数の和:2322

約数の個数: 48

約数和(自身を含む): 57175776

約数和(自身を除く): 36894516

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 157, 314, 471, 628, 785, 942, 1570, 1884, 2153, 2355, 3140, 4306, 4710, 6459, 8612, 9420, 10765, 12918, 21530, 25836, 32295, 43060, 64590, 129180, 338021, 676042, 1014063, 1352084, 1690105, 2028126, 3380210, 4056252, 5070315, 6760420, 10140630, 20281260]

約数ペア:

[(1, 20281260), (2, 10140630), (3, 6760420), (4, 5070315), (5, 4056252), (6, 3380210), (10, 2028126), (12, 1690105), (15, 1352084), (20, 1014063), (30, 676042), (60, 338021), (157, 129180), (314, 64590), (471, 43060), (628, 32295), (785, 25836), (942, 21530), (1570, 12918), (1884, 10765), (2153, 9420), (2355, 8612), (3140, 6459), (4306, 4710)]