20475990

素因数分解:

$2^1\times 3^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{1487}}^1$

素因数の和:1523

約数の個数: 80

約数和(自身を含む): 58335552

約数和(自身を除く): 37859562

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 17, 18, 27, 30, 34, 45, 51, 54, 81, 85, 90, 102, 135, 153, 162, 170, 255, 270, 306, 405, 459, 510, 765, 810, 918, 1377, 1487, 1530, 2295, 2754, 2974, 4461, 4590, 6885, 7435, 8922, 13383, 13770, 14870, 22305, 25279, 26766, 40149, 44610, 50558, 66915, 75837, 80298, 120447, 126395, 133830, 151674, 200745, 227511, 240894, 252790, 379185, 401490, 455022, 602235, 682533, 758370, 1137555, 1204470, 1365066, 2047599, 2275110, 3412665, 4095198, 6825330, 10237995, 20475990]

約数ペア:

[(1, 20475990), (2, 10237995), (3, 6825330), (5, 4095198), (6, 3412665), (9, 2275110), (10, 2047599), (15, 1365066), (17, 1204470), (18, 1137555), (27, 758370), (30, 682533), (34, 602235), (45, 455022), (51, 401490), (54, 379185), (81, 252790), (85, 240894), (90, 227511), (102, 200745), (135, 151674), (153, 133830), (162, 126395), (170, 120447), (255, 80298), (270, 75837), (306, 66915), (405, 50558), (459, 44610), (510, 40149), (765, 26766), (810, 25279), (918, 22305), (1377, 14870), (1487, 13770), (1530, 13383), (2295, 8922), (2754, 7435), (2974, 6885), (4461, 4590)]