21731984

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{109}}^1\times {\mathrm{733}}^1$

素因数の和:867

約数の個数: 40

約数和(自身を含む): 45052920

約数和(自身を除く): 23320936

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 109, 136, 218, 272, 436, 733, 872, 1466, 1744, 1853, 2932, 3706, 5864, 7412, 11728, 12461, 14824, 24922, 29648, 49844, 79897, 99688, 159794, 199376, 319588, 639176, 1278352, 1358249, 2716498, 5432996, 10865992, 21731984]

約数ペア:

[(1, 21731984), (2, 10865992), (4, 5432996), (8, 2716498), (16, 1358249), (17, 1278352), (34, 639176), (68, 319588), (109, 199376), (136, 159794), (218, 99688), (272, 79897), (436, 49844), (733, 29648), (872, 24922), (1466, 14824), (1744, 12461), (1853, 11728), (2932, 7412), (3706, 5864)]