20951000

素因数分解:

$2^3\times 5^3\times 7^1\times {\mathrm{41}}^1\times {\mathrm{73}}^1$

素因数の和:142

約数の個数: 128

約数和(自身を含む): 58181760

約数和(自身を除く): 37230760

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 25, 28, 35, 40, 41, 50, 56, 70, 73, 82, 100, 125, 140, 146, 164, 175, 200, 205, 250, 280, 287, 292, 328, 350, 365, 410, 500, 511, 574, 584, 700, 730, 820, 875, 1000, 1022, 1025, 1148, 1400, 1435, 1460, 1640, 1750, 1825, 2044, 2050, 2296, 2555, 2870, 2920, 2993, 3500, 3650, 4088, 4100, 5110, 5125, 5740, 5986, 7000, 7175, 7300, 8200, 9125, 10220, 10250, 11480, 11972, 12775, 14350, 14600, 14965, 18250, 20440, 20500, 20951, 23944, 25550, 28700, 29930, 35875, 36500, 41000, 41902, 51100, 57400, 59860, 63875, 71750, 73000, 74825, 83804, 102200, 104755, 119720, 127750, 143500, 149650, 167608, 209510, 255500, 287000, 299300, 374125, 419020, 511000, 523775, 598600, 748250, 838040, 1047550, 1496500, 2095100, 2618875, 2993000, 4190200, 5237750, 10475500, 20951000]

約数ペア:

[(1, 20951000), (2, 10475500), (4, 5237750), (5, 4190200), (7, 2993000), (8, 2618875), (10, 2095100), (14, 1496500), (20, 1047550), (25, 838040), (28, 748250), (35, 598600), (40, 523775), (41, 511000), (50, 419020), (56, 374125), (70, 299300), (73, 287000), (82, 255500), (100, 209510), (125, 167608), (140, 149650), (146, 143500), (164, 127750), (175, 119720), (200, 104755), (205, 102200), (250, 83804), (280, 74825), (287, 73000), (292, 71750), (328, 63875), (350, 59860), (365, 57400), (410, 51100), (500, 41902), (511, 41000), (574, 36500), (584, 35875), (700, 29930), (730, 28700), (820, 25550), (875, 23944), (1000, 20951), (1022, 20500), (1025, 20440), (1148, 18250), (1400, 14965), (1435, 14600), (1460, 14350), (1640, 12775), (1750, 11972), (1825, 11480), (2044, 10250), (2050, 10220), (2296, 9125), (2555, 8200), (2870, 7300), (2920, 7175), (2993, 7000), (3500, 5986), (3650, 5740), (4088, 5125), (4100, 5110)]