1990289980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{2267}}^1\times {\mathrm{6271}}^1$

素因数の和:8554

約数の個数: 48

約数和(自身を含む): 4779565056

約数和(自身を除く): 2789275076

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 2267, 4534, 6271, 9068, 11335, 12542, 15869, 22670, 25084, 31355, 31738, 43897, 45340, 62710, 63476, 79345, 87794, 125420, 158690, 175588, 219485, 317380, 438970, 877940, 14216357, 28432714, 56865428, 71081785, 99514499, 142163570, 199028998, 284327140, 398057996, 497572495, 995144990, 1990289980]

約数ペア:

[(1, 1990289980), (2, 995144990), (4, 497572495), (5, 398057996), (7, 284327140), (10, 199028998), (14, 142163570), (20, 99514499), (28, 71081785), (35, 56865428), (70, 28432714), (140, 14216357), (2267, 877940), (4534, 438970), (6271, 317380), (9068, 219485), (11335, 175588), (12542, 158690), (15869, 125420), (22670, 87794), (25084, 79345), (31355, 63476), (31738, 62710), (43897, 45340)]