19680490

素因数分解:

$2^1\times 5^1\times {\mathrm{53}}^1\times {\mathrm{71}}^1\times {\mathrm{523}}^1$

素因数の和:654

約数の個数: 32

約数和(自身を含む): 36671616

約数和(自身を除く): 16991126

約数列:

[1, 2, 5, 10, 53, 71, 106, 142, 265, 355, 523, 530, 710, 1046, 2615, 3763, 5230, 7526, 18815, 27719, 37133, 37630, 55438, 74266, 138595, 185665, 277190, 371330, 1968049, 3936098, 9840245, 19680490]

約数ペア:

[(1, 19680490), (2, 9840245), (5, 3936098), (10, 1968049), (53, 371330), (71, 277190), (106, 185665), (142, 138595), (265, 74266), (355, 55438), (523, 37630), (530, 37133), (710, 27719), (1046, 18815), (2615, 7526), (3763, 5230)]