20257500

素因数分解:

$2^2\times 3^1\times 5^4\times {\mathrm{37}}^1\times {\mathrm{73}}^1$

素因数の和:137

約数の個数: 120

約数和(自身を含む): 61492816

約数和(自身を除く): 41235316

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 25, 30, 37, 50, 60, 73, 74, 75, 100, 111, 125, 146, 148, 150, 185, 219, 222, 250, 292, 300, 365, 370, 375, 438, 444, 500, 555, 625, 730, 740, 750, 876, 925, 1095, 1110, 1250, 1460, 1500, 1825, 1850, 1875, 2190, 2220, 2500, 2701, 2775, 3650, 3700, 3750, 4380, 4625, 5402, 5475, 5550, 7300, 7500, 8103, 9125, 9250, 10804, 10950, 11100, 13505, 13875, 16206, 18250, 18500, 21900, 23125, 27010, 27375, 27750, 32412, 36500, 40515, 45625, 46250, 54020, 54750, 55500, 67525, 69375, 81030, 91250, 92500, 109500, 135050, 136875, 138750, 162060, 182500, 202575, 270100, 273750, 277500, 337625, 405150, 547500, 675250, 810300, 1012875, 1350500, 1688125, 2025750, 3376250, 4051500, 5064375, 6752500, 10128750, 20257500]

約数ペア:

[(1, 20257500), (2, 10128750), (3, 6752500), (4, 5064375), (5, 4051500), (6, 3376250), (10, 2025750), (12, 1688125), (15, 1350500), (20, 1012875), (25, 810300), (30, 675250), (37, 547500), (50, 405150), (60, 337625), (73, 277500), (74, 273750), (75, 270100), (100, 202575), (111, 182500), (125, 162060), (146, 138750), (148, 136875), (150, 135050), (185, 109500), (219, 92500), (222, 91250), (250, 81030), (292, 69375), (300, 67525), (365, 55500), (370, 54750), (375, 54020), (438, 46250), (444, 45625), (500, 40515), (555, 36500), (625, 32412), (730, 27750), (740, 27375), (750, 27010), (876, 23125), (925, 21900), (1095, 18500), (1110, 18250), (1250, 16206), (1460, 13875), (1500, 13505), (1825, 11100), (1850, 10950), (1875, 10804), (2190, 9250), (2220, 9125), (2500, 8103), (2701, 7500), (2775, 7300), (3650, 5550), (3700, 5475), (3750, 5402), (4380, 4625)]