20388780

素因数分解:

$2^2\times 3^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{2221}}^1$

素因数の和:2256

約数の個数: 96

約数和(自身を含む): 67193280

約数和(自身を除く): 46804500

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 17, 18, 20, 27, 30, 34, 36, 45, 51, 54, 60, 68, 85, 90, 102, 108, 135, 153, 170, 180, 204, 255, 270, 306, 340, 459, 510, 540, 612, 765, 918, 1020, 1530, 1836, 2221, 2295, 3060, 4442, 4590, 6663, 8884, 9180, 11105, 13326, 19989, 22210, 26652, 33315, 37757, 39978, 44420, 59967, 66630, 75514, 79956, 99945, 113271, 119934, 133260, 151028, 188785, 199890, 226542, 239868, 299835, 339813, 377570, 399780, 453084, 566355, 599670, 679626, 755140, 1019439, 1132710, 1199340, 1359252, 1699065, 2038878, 2265420, 3398130, 4077756, 5097195, 6796260, 10194390, 20388780]

約数ペア:

[(1, 20388780), (2, 10194390), (3, 6796260), (4, 5097195), (5, 4077756), (6, 3398130), (9, 2265420), (10, 2038878), (12, 1699065), (15, 1359252), (17, 1199340), (18, 1132710), (20, 1019439), (27, 755140), (30, 679626), (34, 599670), (36, 566355), (45, 453084), (51, 399780), (54, 377570), (60, 339813), (68, 299835), (85, 239868), (90, 226542), (102, 199890), (108, 188785), (135, 151028), (153, 133260), (170, 119934), (180, 113271), (204, 99945), (255, 79956), (270, 75514), (306, 66630), (340, 59967), (459, 44420), (510, 39978), (540, 37757), (612, 33315), (765, 26652), (918, 22210), (1020, 19989), (1530, 13326), (1836, 11105), (2221, 9180), (2295, 8884), (3060, 6663), (4442, 4590)]