21090015070

素因数分解:

$2^1\times 5^1\times {\mathrm{19541}}^1\times {\mathrm{107927}}^1$

素因数の和:127475

約数の個数: 16

約数和(自身を含む): 37964321568

約数和(自身を除く): 16874306498

約数列:

[1, 2, 5, 10, 19541, 39082, 97705, 107927, 195410, 215854, 539635, 1079270, 2109001507, 4218003014, 10545007535, 21090015070]

約数ペア:

[(1, 21090015070), (2, 10545007535), (5, 4218003014), (10, 2109001507), (19541, 1079270), (39082, 539635), (97705, 215854), (107927, 195410)]