8905000

素因数分解:

$2^3\times 5^4\times {\mathrm{13}}^1\times {\mathrm{137}}^1$

素因数の和:176

約数の個数: 80

約数和(自身を含む): 22633380

約数和(自身を除く): 13728380

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 25, 26, 40, 50, 52, 65, 100, 104, 125, 130, 137, 200, 250, 260, 274, 325, 500, 520, 548, 625, 650, 685, 1000, 1096, 1250, 1300, 1370, 1625, 1781, 2500, 2600, 2740, 3250, 3425, 3562, 5000, 5480, 6500, 6850, 7124, 8125, 8905, 13000, 13700, 14248, 16250, 17125, 17810, 27400, 32500, 34250, 35620, 44525, 65000, 68500, 71240, 85625, 89050, 137000, 171250, 178100, 222625, 342500, 356200, 445250, 685000, 890500, 1113125, 1781000, 2226250, 4452500, 8905000]

約数ペア:

[(1, 8905000), (2, 4452500), (4, 2226250), (5, 1781000), (8, 1113125), (10, 890500), (13, 685000), (20, 445250), (25, 356200), (26, 342500), (40, 222625), (50, 178100), (52, 171250), (65, 137000), (100, 89050), (104, 85625), (125, 71240), (130, 68500), (137, 65000), (200, 44525), (250, 35620), (260, 34250), (274, 32500), (325, 27400), (500, 17810), (520, 17125), (548, 16250), (625, 14248), (650, 13700), (685, 13000), (1000, 8905), (1096, 8125), (1250, 7124), (1300, 6850), (1370, 6500), (1625, 5480), (1781, 5000), (2500, 3562), (2600, 3425), (2740, 3250)]