20441840

素因数分解:

$2^4\times 5^1\times {\mathrm{255523}}^1$

素因数の和:255536

約数の個数: 20

約数和(自身を含む): 47527464

約数和(自身を除く): 27085624

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 255523, 511046, 1022092, 1277615, 2044184, 2555230, 4088368, 5110460, 10220920, 20441840]

約数ペア:

[(1, 20441840), (2, 10220920), (4, 5110460), (5, 4088368), (8, 2555230), (10, 2044184), (16, 1277615), (20, 1022092), (40, 511046), (80, 255523)]