19009820

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{30661}}^1$

素因数の和:30701

約数の個数: 24

約数和(自身を含む): 41209728

約数和(自身を除く): 22199908

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 30661, 61322, 122644, 153305, 306610, 613220, 950491, 1900982, 3801964, 4752455, 9504910, 19009820]

約数ペア:

[(1, 19009820), (2, 9504910), (4, 4752455), (5, 3801964), (10, 1900982), (20, 950491), (31, 613220), (62, 306610), (124, 153305), (155, 122644), (310, 61322), (620, 30661)]