213520640

素因数分解:

$2^8\times 5^1\times {\mathrm{107}}^1\times {\mathrm{1559}}^1$

素因数の和:1687

約数の個数: 72

約数和(自身を含む): 516559680

約数和(自身を除く): 303039040

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 107, 128, 160, 214, 256, 320, 428, 535, 640, 856, 1070, 1280, 1559, 1712, 2140, 3118, 3424, 4280, 6236, 6848, 7795, 8560, 12472, 13696, 15590, 17120, 24944, 27392, 31180, 34240, 49888, 62360, 68480, 99776, 124720, 136960, 166813, 199552, 249440, 333626, 399104, 498880, 667252, 834065, 997760, 1334504, 1668130, 1995520, 2669008, 3336260, 5338016, 6672520, 10676032, 13345040, 21352064, 26690080, 42704128, 53380160, 106760320, 213520640]

約数ペア:

[(1, 213520640), (2, 106760320), (4, 53380160), (5, 42704128), (8, 26690080), (10, 21352064), (16, 13345040), (20, 10676032), (32, 6672520), (40, 5338016), (64, 3336260), (80, 2669008), (107, 1995520), (128, 1668130), (160, 1334504), (214, 997760), (256, 834065), (320, 667252), (428, 498880), (535, 399104), (640, 333626), (856, 249440), (1070, 199552), (1280, 166813), (1559, 136960), (1712, 124720), (2140, 99776), (3118, 68480), (3424, 62360), (4280, 49888), (6236, 34240), (6848, 31180), (7795, 27392), (8560, 24944), (12472, 17120), (13696, 15590)]