208217940

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{495757}}^1$

素因数の和:495776

約数の個数: 48

約数和(自身を含む): 666298752

約数和(自身を除く): 458080812

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 495757, 991514, 1487271, 1983028, 2478785, 2974542, 3470299, 4957570, 5949084, 6940598, 7436355, 9915140, 10410897, 13881196, 14872710, 17351495, 20821794, 29745420, 34702990, 41643588, 52054485, 69405980, 104108970, 208217940]

約数ペア:

[(1, 208217940), (2, 104108970), (3, 69405980), (4, 52054485), (5, 41643588), (6, 34702990), (7, 29745420), (10, 20821794), (12, 17351495), (14, 14872710), (15, 13881196), (20, 10410897), (21, 9915140), (28, 7436355), (30, 6940598), (35, 5949084), (42, 4957570), (60, 3470299), (70, 2974542), (84, 2478785), (105, 1983028), (140, 1487271), (210, 991514), (420, 495757)]