21801080

素因数分解:

$2^3\times 5^1\times 7^4\times {\mathrm{227}}^1$

素因数の和:266

約数の個数: 80

約数和(自身を含む): 57476520

約数和(自身を除く): 35675440

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 49, 56, 70, 98, 140, 196, 227, 245, 280, 343, 392, 454, 490, 686, 908, 980, 1135, 1372, 1589, 1715, 1816, 1960, 2270, 2401, 2744, 3178, 3430, 4540, 4802, 6356, 6860, 7945, 9080, 9604, 11123, 12005, 12712, 13720, 15890, 19208, 22246, 24010, 31780, 44492, 48020, 55615, 63560, 77861, 88984, 96040, 111230, 155722, 222460, 311444, 389305, 444920, 545027, 622888, 778610, 1090054, 1557220, 2180108, 2725135, 3114440, 4360216, 5450270, 10900540, 21801080]

約数ペア:

[(1, 21801080), (2, 10900540), (4, 5450270), (5, 4360216), (7, 3114440), (8, 2725135), (10, 2180108), (14, 1557220), (20, 1090054), (28, 778610), (35, 622888), (40, 545027), (49, 444920), (56, 389305), (70, 311444), (98, 222460), (140, 155722), (196, 111230), (227, 96040), (245, 88984), (280, 77861), (343, 63560), (392, 55615), (454, 48020), (490, 44492), (686, 31780), (908, 24010), (980, 22246), (1135, 19208), (1372, 15890), (1589, 13720), (1715, 12712), (1816, 12005), (1960, 11123), (2270, 9604), (2401, 9080), (2744, 7945), (3178, 6860), (3430, 6356), (4540, 4802)]