20620728

素因数分解:

$2^3\times 3^2\times {\mathrm{17}}^2\times {\mathrm{991}}^1$

素因数の和:1037

約数の個数: 72

約数和(自身を含む): 59386080

約数和(自身を除く): 38765352

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 17, 18, 24, 34, 36, 51, 68, 72, 102, 136, 153, 204, 289, 306, 408, 578, 612, 867, 991, 1156, 1224, 1734, 1982, 2312, 2601, 2973, 3468, 3964, 5202, 5946, 6936, 7928, 8919, 10404, 11892, 16847, 17838, 20808, 23784, 33694, 35676, 50541, 67388, 71352, 101082, 134776, 151623, 202164, 286399, 303246, 404328, 572798, 606492, 859197, 1145596, 1212984, 1718394, 2291192, 2577591, 3436788, 5155182, 6873576, 10310364, 20620728]

約数ペア:

[(1, 20620728), (2, 10310364), (3, 6873576), (4, 5155182), (6, 3436788), (8, 2577591), (9, 2291192), (12, 1718394), (17, 1212984), (18, 1145596), (24, 859197), (34, 606492), (36, 572798), (51, 404328), (68, 303246), (72, 286399), (102, 202164), (136, 151623), (153, 134776), (204, 101082), (289, 71352), (306, 67388), (408, 50541), (578, 35676), (612, 33694), (867, 23784), (991, 20808), (1156, 17838), (1224, 16847), (1734, 11892), (1982, 10404), (2312, 8919), (2601, 7928), (2973, 6936), (3468, 5946), (3964, 5202)]