18941980

素因数分解:

$2^2\times 5^1\times {\mathrm{353}}^1\times {\mathrm{2683}}^1$

素因数の和:3045

約数の個数: 24

約数和(自身を含む): 39905712

約数和(自身を除く): 20963732

約数列:

[1, 2, 4, 5, 10, 20, 353, 706, 1412, 1765, 2683, 3530, 5366, 7060, 10732, 13415, 26830, 53660, 947099, 1894198, 3788396, 4735495, 9470990, 18941980]

約数ペア:

[(1, 18941980), (2, 9470990), (4, 4735495), (5, 3788396), (10, 1894198), (20, 947099), (353, 53660), (706, 26830), (1412, 13415), (1765, 10732), (2683, 7060), (3530, 5366)]