278908000

素因数分解:

$2^5\times 5^3\times 7^2\times {\mathrm{1423}}^1$

素因数の和:1462

約数の個数: 144

約数和(自身を含む): 797719104

約数和(自身を除く): 518811104

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 25, 28, 32, 35, 40, 49, 50, 56, 70, 80, 98, 100, 112, 125, 140, 160, 175, 196, 200, 224, 245, 250, 280, 350, 392, 400, 490, 500, 560, 700, 784, 800, 875, 980, 1000, 1120, 1225, 1400, 1423, 1568, 1750, 1960, 2000, 2450, 2800, 2846, 3500, 3920, 4000, 4900, 5600, 5692, 6125, 7000, 7115, 7840, 9800, 9961, 11384, 12250, 14000, 14230, 19600, 19922, 22768, 24500, 28000, 28460, 35575, 39200, 39844, 45536, 49000, 49805, 56920, 69727, 71150, 79688, 98000, 99610, 113840, 139454, 142300, 159376, 177875, 196000, 199220, 227680, 249025, 278908, 284600, 318752, 348635, 355750, 398440, 498050, 557816, 569200, 697270, 711500, 796880, 996100, 1115632, 1138400, 1245125, 1394540, 1423000, 1593760, 1743175, 1992200, 2231264, 2490250, 2789080, 2846000, 3486350, 3984400, 4980500, 5578160, 5692000, 6972700, 7968800, 8715875, 9961000, 11156320, 13945400, 17431750, 19922000, 27890800, 34863500, 39844000, 55781600, 69727000, 139454000, 278908000]

約数ペア:

[(1, 278908000), (2, 139454000), (4, 69727000), (5, 55781600), (7, 39844000), (8, 34863500), (10, 27890800), (14, 19922000), (16, 17431750), (20, 13945400), (25, 11156320), (28, 9961000), (32, 8715875), (35, 7968800), (40, 6972700), (49, 5692000), (50, 5578160), (56, 4980500), (70, 3984400), (80, 3486350), (98, 2846000), (100, 2789080), (112, 2490250), (125, 2231264), (140, 1992200), (160, 1743175), (175, 1593760), (196, 1423000), (200, 1394540), (224, 1245125), (245, 1138400), (250, 1115632), (280, 996100), (350, 796880), (392, 711500), (400, 697270), (490, 569200), (500, 557816), (560, 498050), (700, 398440), (784, 355750), (800, 348635), (875, 318752), (980, 284600), (1000, 278908), (1120, 249025), (1225, 227680), (1400, 199220), (1423, 196000), (1568, 177875), (1750, 159376), (1960, 142300), (2000, 139454), (2450, 113840), (2800, 99610), (2846, 98000), (3500, 79688), (3920, 71150), (4000, 69727), (4900, 56920), (5600, 49805), (5692, 49000), (6125, 45536), (7000, 39844), (7115, 39200), (7840, 35575), (9800, 28460), (9961, 28000), (11384, 24500), (12250, 22768), (14000, 19922), (14230, 19600)]