19419640

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{15661}}^1$

素因数の和:15703

約数の個数: 32

約数和(自身を含む): 45106560

約数和(自身を除く): 25686920

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 15661, 31322, 62644, 78305, 125288, 156610, 313220, 485491, 626440, 970982, 1941964, 2427455, 3883928, 4854910, 9709820, 19419640]

約数ペア:

[(1, 19419640), (2, 9709820), (4, 4854910), (5, 3883928), (8, 2427455), (10, 1941964), (20, 970982), (31, 626440), (40, 485491), (62, 313220), (124, 156610), (155, 125288), (248, 78305), (310, 62644), (620, 31322), (1240, 15661)]