21885800

素因数分解:

$2^3\times 5^2\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{157}}^1$

素因数の和:231

約数の個数: 96

約数和(自身を含む): 55543320

約数和(自身を除く): 33657520

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 25, 34, 40, 41, 50, 68, 82, 85, 100, 136, 157, 164, 170, 200, 205, 314, 328, 340, 410, 425, 628, 680, 697, 785, 820, 850, 1025, 1256, 1394, 1570, 1640, 1700, 2050, 2669, 2788, 3140, 3400, 3485, 3925, 4100, 5338, 5576, 6280, 6437, 6970, 7850, 8200, 10676, 12874, 13345, 13940, 15700, 17425, 21352, 25748, 26690, 27880, 31400, 32185, 34850, 51496, 53380, 64370, 66725, 69700, 106760, 109429, 128740, 133450, 139400, 160925, 218858, 257480, 266900, 321850, 437716, 533800, 547145, 643700, 875432, 1094290, 1287400, 2188580, 2735725, 4377160, 5471450, 10942900, 21885800]

約数ペア:

[(1, 21885800), (2, 10942900), (4, 5471450), (5, 4377160), (8, 2735725), (10, 2188580), (17, 1287400), (20, 1094290), (25, 875432), (34, 643700), (40, 547145), (41, 533800), (50, 437716), (68, 321850), (82, 266900), (85, 257480), (100, 218858), (136, 160925), (157, 139400), (164, 133450), (170, 128740), (200, 109429), (205, 106760), (314, 69700), (328, 66725), (340, 64370), (410, 53380), (425, 51496), (628, 34850), (680, 32185), (697, 31400), (785, 27880), (820, 26690), (850, 25748), (1025, 21352), (1256, 17425), (1394, 15700), (1570, 13940), (1640, 13345), (1700, 12874), (2050, 10676), (2669, 8200), (2788, 7850), (3140, 6970), (3400, 6437), (3485, 6280), (3925, 5576), (4100, 5338)]