20429500

素因数分解:

$2^2\times 5^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{449}}^1$

素因数の和:488

約数の個数: 96

約数和(自身を含む): 55036800

約数和(自身を除く): 34607300

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 25, 26, 28, 35, 50, 52, 65, 70, 91, 100, 125, 130, 140, 175, 182, 250, 260, 325, 350, 364, 449, 455, 500, 650, 700, 875, 898, 910, 1300, 1625, 1750, 1796, 1820, 2245, 2275, 3143, 3250, 3500, 4490, 4550, 5837, 6286, 6500, 8980, 9100, 11225, 11375, 11674, 12572, 15715, 22450, 22750, 23348, 29185, 31430, 40859, 44900, 45500, 56125, 58370, 62860, 78575, 81718, 112250, 116740, 145925, 157150, 163436, 204295, 224500, 291850, 314300, 392875, 408590, 583700, 729625, 785750, 817180, 1021475, 1459250, 1571500, 2042950, 2918500, 4085900, 5107375, 10214750, 20429500]

約数ペア:

[(1, 20429500), (2, 10214750), (4, 5107375), (5, 4085900), (7, 2918500), (10, 2042950), (13, 1571500), (14, 1459250), (20, 1021475), (25, 817180), (26, 785750), (28, 729625), (35, 583700), (50, 408590), (52, 392875), (65, 314300), (70, 291850), (91, 224500), (100, 204295), (125, 163436), (130, 157150), (140, 145925), (175, 116740), (182, 112250), (250, 81718), (260, 78575), (325, 62860), (350, 58370), (364, 56125), (449, 45500), (455, 44900), (500, 40859), (650, 31430), (700, 29185), (875, 23348), (898, 22750), (910, 22450), (1300, 15715), (1625, 12572), (1750, 11674), (1796, 11375), (1820, 11225), (2245, 9100), (2275, 8980), (3143, 6500), (3250, 6286), (3500, 5837), (4490, 4550)]