20505900

素因数分解:

$2^2\times 3^1\times 5^2\times {\mathrm{29}}^1\times {\mathrm{2357}}^1$

素因数の和:2403

約数の個数: 72

約数和(自身を含む): 61402320

約数和(自身を除く): 40896420

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 25, 29, 30, 50, 58, 60, 75, 87, 100, 116, 145, 150, 174, 290, 300, 348, 435, 580, 725, 870, 1450, 1740, 2175, 2357, 2900, 4350, 4714, 7071, 8700, 9428, 11785, 14142, 23570, 28284, 35355, 47140, 58925, 68353, 70710, 117850, 136706, 141420, 176775, 205059, 235700, 273412, 341765, 353550, 410118, 683530, 707100, 820236, 1025295, 1367060, 1708825, 2050590, 3417650, 4101180, 5126475, 6835300, 10252950, 20505900]

約数ペア:

[(1, 20505900), (2, 10252950), (3, 6835300), (4, 5126475), (5, 4101180), (6, 3417650), (10, 2050590), (12, 1708825), (15, 1367060), (20, 1025295), (25, 820236), (29, 707100), (30, 683530), (50, 410118), (58, 353550), (60, 341765), (75, 273412), (87, 235700), (100, 205059), (116, 176775), (145, 141420), (150, 136706), (174, 117850), (290, 70710), (300, 68353), (348, 58925), (435, 47140), (580, 35355), (725, 28284), (870, 23570), (1450, 14142), (1740, 11785), (2175, 9428), (2357, 8700), (2900, 7071), (4350, 4714)]