654320180

素因数分解:

$2^2\times 5^1\times {\mathrm{179}}^1\times {\mathrm{193}}^1\times {\mathrm{947}}^1$

素因数の和:1328

約数の個数: 48

約数和(自身を含む): 1390374720

約数和(自身を除く): 736054540

約数列:

[1, 2, 4, 5, 10, 20, 179, 193, 358, 386, 716, 772, 895, 947, 965, 1790, 1894, 1930, 3580, 3788, 3860, 4735, 9470, 18940, 34547, 69094, 138188, 169513, 172735, 182771, 339026, 345470, 365542, 678052, 690940, 731084, 847565, 913855, 1695130, 1827710, 3390260, 3655420, 32716009, 65432018, 130864036, 163580045, 327160090, 654320180]

約数ペア:

[(1, 654320180), (2, 327160090), (4, 163580045), (5, 130864036), (10, 65432018), (20, 32716009), (179, 3655420), (193, 3390260), (358, 1827710), (386, 1695130), (716, 913855), (772, 847565), (895, 731084), (947, 690940), (965, 678052), (1790, 365542), (1894, 345470), (1930, 339026), (3580, 182771), (3788, 172735), (3860, 169513), (4735, 138188), (9470, 69094), (18940, 34547)]