217435900

素因数分解:

$2^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{2221}}^1$

素因数の和:2335

約数の個数: 72

約数和(自身を含む): 520747920

約数和(自身を除く): 303312020

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 25, 44, 50, 55, 89, 100, 110, 178, 220, 275, 356, 445, 550, 890, 979, 1100, 1780, 1958, 2221, 2225, 3916, 4442, 4450, 4895, 8884, 8900, 9790, 11105, 19580, 22210, 24431, 24475, 44420, 48862, 48950, 55525, 97724, 97900, 111050, 122155, 197669, 222100, 244310, 395338, 488620, 610775, 790676, 988345, 1221550, 1976690, 2174359, 2443100, 3953380, 4348718, 4941725, 8697436, 9883450, 10871795, 19766900, 21743590, 43487180, 54358975, 108717950, 217435900]

約数ペア:

[(1, 217435900), (2, 108717950), (4, 54358975), (5, 43487180), (10, 21743590), (11, 19766900), (20, 10871795), (22, 9883450), (25, 8697436), (44, 4941725), (50, 4348718), (55, 3953380), (89, 2443100), (100, 2174359), (110, 1976690), (178, 1221550), (220, 988345), (275, 790676), (356, 610775), (445, 488620), (550, 395338), (890, 244310), (979, 222100), (1100, 197669), (1780, 122155), (1958, 111050), (2221, 97900), (2225, 97724), (3916, 55525), (4442, 48950), (4450, 48862), (4895, 44420), (8884, 24475), (8900, 24431), (9790, 22210), (11105, 19580)]