28397780

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{74731}}^1$

素因数の和:74759

約数の個数: 24

約数和(自身を含む): 62774880

約数和(自身を除く): 34377100

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380, 74731, 149462, 298924, 373655, 747310, 1419889, 1494620, 2839778, 5679556, 7099445, 14198890, 28397780]

約数ペア:

[(1, 28397780), (2, 14198890), (4, 7099445), (5, 5679556), (10, 2839778), (19, 1494620), (20, 1419889), (38, 747310), (76, 373655), (95, 298924), (190, 149462), (380, 74731)]