809900

素因数分解:

$2^2\times 5^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{89}}^1$

素因数の和:123

約数の個数: 72

約数和(自身を含む): 2187360

約数和(自身を除く): 1377460

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 25, 26, 28, 35, 50, 52, 65, 70, 89, 91, 100, 130, 140, 175, 178, 182, 260, 325, 350, 356, 364, 445, 455, 623, 650, 700, 890, 910, 1157, 1246, 1300, 1780, 1820, 2225, 2275, 2314, 2492, 3115, 4450, 4550, 4628, 5785, 6230, 8099, 8900, 9100, 11570, 12460, 15575, 16198, 23140, 28925, 31150, 32396, 40495, 57850, 62300, 80990, 115700, 161980, 202475, 404950, 809900]

約数ペア:

[(1, 809900), (2, 404950), (4, 202475), (5, 161980), (7, 115700), (10, 80990), (13, 62300), (14, 57850), (20, 40495), (25, 32396), (26, 31150), (28, 28925), (35, 23140), (50, 16198), (52, 15575), (65, 12460), (70, 11570), (89, 9100), (91, 8900), (100, 8099), (130, 6230), (140, 5785), (175, 4628), (178, 4550), (182, 4450), (260, 3115), (325, 2492), (350, 2314), (356, 2275), (364, 2225), (445, 1820), (455, 1780), (623, 1300), (650, 1246), (700, 1157), (890, 910)]