21765800

素因数分解:

$2^3\times 5^2\times 7^2\times {\mathrm{2221}}^1$

素因数の和:2251

約数の個数: 72

約数和(自身を含む): 58894110

約数和(自身を除く): 37128310

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 25, 28, 35, 40, 49, 50, 56, 70, 98, 100, 140, 175, 196, 200, 245, 280, 350, 392, 490, 700, 980, 1225, 1400, 1960, 2221, 2450, 4442, 4900, 8884, 9800, 11105, 15547, 17768, 22210, 31094, 44420, 55525, 62188, 77735, 88840, 108829, 111050, 124376, 155470, 217658, 222100, 310940, 388675, 435316, 444200, 544145, 621880, 777350, 870632, 1088290, 1554700, 2176580, 2720725, 3109400, 4353160, 5441450, 10882900, 21765800]

約数ペア:

[(1, 21765800), (2, 10882900), (4, 5441450), (5, 4353160), (7, 3109400), (8, 2720725), (10, 2176580), (14, 1554700), (20, 1088290), (25, 870632), (28, 777350), (35, 621880), (40, 544145), (49, 444200), (50, 435316), (56, 388675), (70, 310940), (98, 222100), (100, 217658), (140, 155470), (175, 124376), (196, 111050), (200, 108829), (245, 88840), (280, 77735), (350, 62188), (392, 55525), (490, 44420), (700, 31094), (980, 22210), (1225, 17768), (1400, 15547), (1960, 11105), (2221, 9800), (2450, 8884), (4442, 4900)]