90701680

素因数分解:

$2^4\times 5^1\times {\mathrm{89}}^1\times {\mathrm{12739}}^1$

素因数の和:12841

約数の個数: 40

約数和(自身を含む): 213267600

約数和(自身を除く): 122565920

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 89, 178, 356, 445, 712, 890, 1424, 1780, 3560, 7120, 12739, 25478, 50956, 63695, 101912, 127390, 203824, 254780, 509560, 1019120, 1133771, 2267542, 4535084, 5668855, 9070168, 11337710, 18140336, 22675420, 45350840, 90701680]

約数ペア:

[(1, 90701680), (2, 45350840), (4, 22675420), (5, 18140336), (8, 11337710), (10, 9070168), (16, 5668855), (20, 4535084), (40, 2267542), (80, 1133771), (89, 1019120), (178, 509560), (356, 254780), (445, 203824), (712, 127390), (890, 101912), (1424, 63695), (1780, 50956), (3560, 25478), (7120, 12739)]