8450000

素因数分解:

$2^4\times 5^5\times {\mathrm{13}}^2$

素因数の和:59

約数の個数: 90

約数和(自身を含む): 22158738

約数和(自身を除く): 13708738

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 25, 26, 40, 50, 52, 65, 80, 100, 104, 125, 130, 169, 200, 208, 250, 260, 325, 338, 400, 500, 520, 625, 650, 676, 845, 1000, 1040, 1250, 1300, 1352, 1625, 1690, 2000, 2500, 2600, 2704, 3125, 3250, 3380, 4225, 5000, 5200, 6250, 6500, 6760, 8125, 8450, 10000, 12500, 13000, 13520, 16250, 16900, 21125, 25000, 26000, 32500, 33800, 40625, 42250, 50000, 65000, 67600, 81250, 84500, 105625, 130000, 162500, 169000, 211250, 325000, 338000, 422500, 528125, 650000, 845000, 1056250, 1690000, 2112500, 4225000, 8450000]

約数ペア:

[(1, 8450000), (2, 4225000), (4, 2112500), (5, 1690000), (8, 1056250), (10, 845000), (13, 650000), (16, 528125), (20, 422500), (25, 338000), (26, 325000), (40, 211250), (50, 169000), (52, 162500), (65, 130000), (80, 105625), (100, 84500), (104, 81250), (125, 67600), (130, 65000), (169, 50000), (200, 42250), (208, 40625), (250, 33800), (260, 32500), (325, 26000), (338, 25000), (400, 21125), (500, 16900), (520, 16250), (625, 13520), (650, 13000), (676, 12500), (845, 10000), (1000, 8450), (1040, 8125), (1250, 6760), (1300, 6500), (1352, 6250), (1625, 5200), (1690, 5000), (2000, 4225), (2500, 3380), (2600, 3250), (2704, 3125)]