21608440

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{229}}^1\times {\mathrm{337}}^1$

素因数の和:584

約数の個数: 64

約数和(自身を含む): 55972800

約数和(自身を除く): 34364360

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 229, 280, 337, 458, 674, 916, 1145, 1348, 1603, 1685, 1832, 2290, 2359, 2696, 3206, 3370, 4580, 4718, 6412, 6740, 8015, 9160, 9436, 11795, 12824, 13480, 16030, 18872, 23590, 32060, 47180, 64120, 77173, 94360, 154346, 308692, 385865, 540211, 617384, 771730, 1080422, 1543460, 2160844, 2701055, 3086920, 4321688, 5402110, 10804220, 21608440]

約数ペア:

[(1, 21608440), (2, 10804220), (4, 5402110), (5, 4321688), (7, 3086920), (8, 2701055), (10, 2160844), (14, 1543460), (20, 1080422), (28, 771730), (35, 617384), (40, 540211), (56, 385865), (70, 308692), (140, 154346), (229, 94360), (280, 77173), (337, 64120), (458, 47180), (674, 32060), (916, 23590), (1145, 18872), (1348, 16030), (1603, 13480), (1685, 12824), (1832, 11795), (2290, 9436), (2359, 9160), (2696, 8015), (3206, 6740), (3370, 6412), (4580, 4718)]