20326040

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{229}}^1\times {\mathrm{317}}^1$

素因数の和:564

約数の個数: 64

約数和(自身を含む): 52660800

約数和(自身を除く): 32334760

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 229, 280, 317, 458, 634, 916, 1145, 1268, 1585, 1603, 1832, 2219, 2290, 2536, 3170, 3206, 4438, 4580, 6340, 6412, 8015, 8876, 9160, 11095, 12680, 12824, 16030, 17752, 22190, 32060, 44380, 64120, 72593, 88760, 145186, 290372, 362965, 508151, 580744, 725930, 1016302, 1451860, 2032604, 2540755, 2903720, 4065208, 5081510, 10163020, 20326040]

約数ペア:

[(1, 20326040), (2, 10163020), (4, 5081510), (5, 4065208), (7, 2903720), (8, 2540755), (10, 2032604), (14, 1451860), (20, 1016302), (28, 725930), (35, 580744), (40, 508151), (56, 362965), (70, 290372), (140, 145186), (229, 88760), (280, 72593), (317, 64120), (458, 44380), (634, 32060), (916, 22190), (1145, 17752), (1268, 16030), (1585, 12824), (1603, 12680), (1832, 11095), (2219, 9160), (2290, 8876), (2536, 8015), (3170, 6412), (3206, 6340), (4438, 4580)]