19657660

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{8123}}^1$

素因数の和:8154

約数の個数: 36

約数和(自身を含む): 45380664

約数和(自身を除く): 25723004

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 121, 220, 242, 484, 605, 1210, 2420, 8123, 16246, 32492, 40615, 81230, 89353, 162460, 178706, 357412, 446765, 893530, 982883, 1787060, 1965766, 3931532, 4914415, 9828830, 19657660]

約数ペア:

[(1, 19657660), (2, 9828830), (4, 4914415), (5, 3931532), (10, 1965766), (11, 1787060), (20, 982883), (22, 893530), (44, 446765), (55, 357412), (110, 178706), (121, 162460), (220, 89353), (242, 81230), (484, 40615), (605, 32492), (1210, 16246), (2420, 8123)]