81339724

素因数分解:

$2^2\times {\mathrm{109}}^1\times {\mathrm{197}}^1\times {\mathrm{947}}^1$

素因数の和:1257

約数の個数: 24

約数和(自身を含む): 144532080

約数和(自身を除く): 63192356

約数列:

[1, 2, 4, 109, 197, 218, 394, 436, 788, 947, 1894, 3788, 21473, 42946, 85892, 103223, 186559, 206446, 373118, 412892, 746236, 20334931, 40669862, 81339724]

約数ペア:

[(1, 81339724), (2, 40669862), (4, 20334931), (109, 746236), (197, 412892), (218, 373118), (394, 206446), (436, 186559), (788, 103223), (947, 85892), (1894, 42946), (3788, 21473)]