18914420

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{167}}^1\times {\mathrm{809}}^1$

素因数の和:992

約数の個数: 48

約数和(自身を含む): 45722880

約数和(自身を除く): 26808460

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 167, 334, 668, 809, 835, 1169, 1618, 1670, 2338, 3236, 3340, 4045, 4676, 5663, 5845, 8090, 11326, 11690, 16180, 22652, 23380, 28315, 56630, 113260, 135103, 270206, 540412, 675515, 945721, 1351030, 1891442, 2702060, 3782884, 4728605, 9457210, 18914420]

約数ペア:

[(1, 18914420), (2, 9457210), (4, 4728605), (5, 3782884), (7, 2702060), (10, 1891442), (14, 1351030), (20, 945721), (28, 675515), (35, 540412), (70, 270206), (140, 135103), (167, 113260), (334, 56630), (668, 28315), (809, 23380), (835, 22652), (1169, 16180), (1618, 11690), (1670, 11326), (2338, 8090), (3236, 5845), (3340, 5663), (4045, 4676)]