21791000

素因数分解:

$2^3\times 5^3\times 7^1\times {\mathrm{11}}^1\times {\mathrm{283}}^1$

素因数の和:322

約数の個数: 128

約数和(自身を含む): 63797760

約数和(自身を除く): 42006760

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 20, 22, 25, 28, 35, 40, 44, 50, 55, 56, 70, 77, 88, 100, 110, 125, 140, 154, 175, 200, 220, 250, 275, 280, 283, 308, 350, 385, 440, 500, 550, 566, 616, 700, 770, 875, 1000, 1100, 1132, 1375, 1400, 1415, 1540, 1750, 1925, 1981, 2200, 2264, 2750, 2830, 3080, 3113, 3500, 3850, 3962, 5500, 5660, 6226, 7000, 7075, 7700, 7924, 9625, 9905, 11000, 11320, 12452, 14150, 15400, 15565, 15848, 19250, 19810, 21791, 24904, 28300, 31130, 35375, 38500, 39620, 43582, 49525, 56600, 62260, 70750, 77000, 77825, 79240, 87164, 99050, 108955, 124520, 141500, 155650, 174328, 198100, 217910, 247625, 283000, 311300, 389125, 396200, 435820, 495250, 544775, 622600, 778250, 871640, 990500, 1089550, 1556500, 1981000, 2179100, 2723875, 3113000, 4358200, 5447750, 10895500, 21791000]

約数ペア:

[(1, 21791000), (2, 10895500), (4, 5447750), (5, 4358200), (7, 3113000), (8, 2723875), (10, 2179100), (11, 1981000), (14, 1556500), (20, 1089550), (22, 990500), (25, 871640), (28, 778250), (35, 622600), (40, 544775), (44, 495250), (50, 435820), (55, 396200), (56, 389125), (70, 311300), (77, 283000), (88, 247625), (100, 217910), (110, 198100), (125, 174328), (140, 155650), (154, 141500), (175, 124520), (200, 108955), (220, 99050), (250, 87164), (275, 79240), (280, 77825), (283, 77000), (308, 70750), (350, 62260), (385, 56600), (440, 49525), (500, 43582), (550, 39620), (566, 38500), (616, 35375), (700, 31130), (770, 28300), (875, 24904), (1000, 21791), (1100, 19810), (1132, 19250), (1375, 15848), (1400, 15565), (1415, 15400), (1540, 14150), (1750, 12452), (1925, 11320), (1981, 11000), (2200, 9905), (2264, 9625), (2750, 7924), (2830, 7700), (3080, 7075), (3113, 7000), (3500, 6226), (3850, 5660), (3962, 5500)]