19933816

素因数分解:

$2^3\times 7^1\times {\mathrm{149}}^1\times {\mathrm{2389}}^1$

素因数の和:2551

約数の個数: 32

約数和(自身を含む): 43020000

約数和(自身を除く): 23086184

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 149, 298, 596, 1043, 1192, 2086, 2389, 4172, 4778, 8344, 9556, 16723, 19112, 33446, 66892, 133784, 355961, 711922, 1423844, 2491727, 2847688, 4983454, 9966908, 19933816]

約数ペア:

[(1, 19933816), (2, 9966908), (4, 4983454), (7, 2847688), (8, 2491727), (14, 1423844), (28, 711922), (56, 355961), (149, 133784), (298, 66892), (596, 33446), (1043, 19112), (1192, 16723), (2086, 9556), (2389, 8344), (4172, 4778)]