20967800

素因数分解:

$2^3\times 5^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{881}}^1$

素因数の和:921

約数の個数: 96

約数和(自身を含む): 59058720

約数和(自身を除く): 38090920

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 17, 20, 25, 28, 34, 35, 40, 50, 56, 68, 70, 85, 100, 119, 136, 140, 170, 175, 200, 238, 280, 340, 350, 425, 476, 595, 680, 700, 850, 881, 952, 1190, 1400, 1700, 1762, 2380, 2975, 3400, 3524, 4405, 4760, 5950, 6167, 7048, 8810, 11900, 12334, 14977, 17620, 22025, 23800, 24668, 29954, 30835, 35240, 44050, 49336, 59908, 61670, 74885, 88100, 104839, 119816, 123340, 149770, 154175, 176200, 209678, 246680, 299540, 308350, 374425, 419356, 524195, 599080, 616700, 748850, 838712, 1048390, 1233400, 1497700, 2096780, 2620975, 2995400, 4193560, 5241950, 10483900, 20967800]

約数ペア:

[(1, 20967800), (2, 10483900), (4, 5241950), (5, 4193560), (7, 2995400), (8, 2620975), (10, 2096780), (14, 1497700), (17, 1233400), (20, 1048390), (25, 838712), (28, 748850), (34, 616700), (35, 599080), (40, 524195), (50, 419356), (56, 374425), (68, 308350), (70, 299540), (85, 246680), (100, 209678), (119, 176200), (136, 154175), (140, 149770), (170, 123340), (175, 119816), (200, 104839), (238, 88100), (280, 74885), (340, 61670), (350, 59908), (425, 49336), (476, 44050), (595, 35240), (680, 30835), (700, 29954), (850, 24668), (881, 23800), (952, 22025), (1190, 17620), (1400, 14977), (1700, 12334), (1762, 11900), (2380, 8810), (2975, 7048), (3400, 6167), (3524, 5950), (4405, 4760)]