18990836

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{317}}^1\times {\mathrm{881}}^1$

素因数の和:1219

約数の個数: 24

約数和(自身を含む): 35339976

約数和(自身を除く): 16349140

約数列:

[1, 2, 4, 17, 34, 68, 317, 634, 881, 1268, 1762, 3524, 5389, 10778, 14977, 21556, 29954, 59908, 279277, 558554, 1117108, 4747709, 9495418, 18990836]

約数ペア:

[(1, 18990836), (2, 9495418), (4, 4747709), (17, 1117108), (34, 558554), (68, 279277), (317, 59908), (634, 29954), (881, 21556), (1268, 14977), (1762, 10778), (3524, 5389)]