20748240

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{28817}}^1$

素因数の和:28836

約数の個数: 60

約数和(自身を含む): 69681924

約数和(自身を除く): 48933684

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 40, 45, 48, 60, 72, 80, 90, 120, 144, 180, 240, 360, 720, 28817, 57634, 86451, 115268, 144085, 172902, 230536, 259353, 288170, 345804, 432255, 461072, 518706, 576340, 691608, 864510, 1037412, 1152680, 1296765, 1383216, 1729020, 2074824, 2305360, 2593530, 3458040, 4149648, 5187060, 6916080, 10374120, 20748240]

約数ペア:

[(1, 20748240), (2, 10374120), (3, 6916080), (4, 5187060), (5, 4149648), (6, 3458040), (8, 2593530), (9, 2305360), (10, 2074824), (12, 1729020), (15, 1383216), (16, 1296765), (18, 1152680), (20, 1037412), (24, 864510), (30, 691608), (36, 576340), (40, 518706), (45, 461072), (48, 432255), (60, 345804), (72, 288170), (80, 259353), (90, 230536), (120, 172902), (144, 144085), (180, 115268), (240, 86451), (360, 57634), (720, 28817)]