20404980

素因数分解:

$2^2\times 3^3\times 5^1\times {\mathrm{29}}^1\times {\mathrm{1303}}^1$

素因数の和:1350

約数の個数: 96

約数和(自身を含む): 65721600

約数和(自身を除く): 45316620

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 29, 30, 36, 45, 54, 58, 60, 87, 90, 108, 116, 135, 145, 174, 180, 261, 270, 290, 348, 435, 522, 540, 580, 783, 870, 1044, 1303, 1305, 1566, 1740, 2606, 2610, 3132, 3909, 3915, 5212, 5220, 6515, 7818, 7830, 11727, 13030, 15636, 15660, 19545, 23454, 26060, 35181, 37787, 39090, 46908, 58635, 70362, 75574, 78180, 113361, 117270, 140724, 151148, 175905, 188935, 226722, 234540, 340083, 351810, 377870, 453444, 566805, 680166, 703620, 755740, 1020249, 1133610, 1360332, 1700415, 2040498, 2267220, 3400830, 4080996, 5101245, 6801660, 10202490, 20404980]

約数ペア:

[(1, 20404980), (2, 10202490), (3, 6801660), (4, 5101245), (5, 4080996), (6, 3400830), (9, 2267220), (10, 2040498), (12, 1700415), (15, 1360332), (18, 1133610), (20, 1020249), (27, 755740), (29, 703620), (30, 680166), (36, 566805), (45, 453444), (54, 377870), (58, 351810), (60, 340083), (87, 234540), (90, 226722), (108, 188935), (116, 175905), (135, 151148), (145, 140724), (174, 117270), (180, 113361), (261, 78180), (270, 75574), (290, 70362), (348, 58635), (435, 46908), (522, 39090), (540, 37787), (580, 35181), (783, 26060), (870, 23454), (1044, 19545), (1303, 15660), (1305, 15636), (1566, 13030), (1740, 11727), (2606, 7830), (2610, 7818), (3132, 6515), (3909, 5220), (3915, 5212)]