19658840

素因数分解:

$2^3\times 5^1\times {\mathrm{37}}^2\times {\mathrm{359}}^1$

素因数の和:444

約数の個数: 48

約数和(自身を含む): 45586800

約数和(自身を除く): 25927960

約数列:

[1, 2, 4, 5, 8, 10, 20, 37, 40, 74, 148, 185, 296, 359, 370, 718, 740, 1369, 1436, 1480, 1795, 2738, 2872, 3590, 5476, 6845, 7180, 10952, 13283, 13690, 14360, 26566, 27380, 53132, 54760, 66415, 106264, 132830, 265660, 491471, 531320, 982942, 1965884, 2457355, 3931768, 4914710, 9829420, 19658840]

約数ペア:

[(1, 19658840), (2, 9829420), (4, 4914710), (5, 3931768), (8, 2457355), (10, 1965884), (20, 982942), (37, 531320), (40, 491471), (74, 265660), (148, 132830), (185, 106264), (296, 66415), (359, 54760), (370, 53132), (718, 27380), (740, 26566), (1369, 14360), (1436, 13690), (1480, 13283), (1795, 10952), (2738, 7180), (2872, 6845), (3590, 5476)]