18934840

素因数分解:

$2^3\times 5^1\times {\mathrm{379}}^1\times {\mathrm{1249}}^1$

素因数の和:1639

約数の個数: 32

約数和(自身を含む): 42750000

約数和(自身を除く): 23815160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 379, 758, 1249, 1516, 1895, 2498, 3032, 3790, 4996, 6245, 7580, 9992, 12490, 15160, 24980, 49960, 473371, 946742, 1893484, 2366855, 3786968, 4733710, 9467420, 18934840]

約数ペア:

[(1, 18934840), (2, 9467420), (4, 4733710), (5, 3786968), (8, 2366855), (10, 1893484), (20, 946742), (40, 473371), (379, 49960), (758, 24980), (1249, 15160), (1516, 12490), (1895, 9992), (2498, 7580), (3032, 6245), (3790, 4996)]