20921495420

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{149439253}}^1$

素因数の和:149439269

約数の個数: 24

約数和(自身を含む): 50211589344

約数和(自身を除く): 29290093924

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 149439253, 298878506, 597757012, 747196265, 1046074771, 1494392530, 2092149542, 2988785060, 4184299084, 5230373855, 10460747710, 20921495420]

約数ペア:

[(1, 20921495420), (2, 10460747710), (4, 5230373855), (5, 4184299084), (7, 2988785060), (10, 2092149542), (14, 1494392530), (20, 1046074771), (28, 747196265), (35, 597757012), (70, 298878506), (140, 149439253)]