21971157

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{1069}}^1$

素因数の和:1133

約数の個数: 32

約数和(自身を含む): 34513920

約数和(自身を除く): 12542763

約数列:

[1, 3, 13, 17, 31, 39, 51, 93, 221, 403, 527, 663, 1069, 1209, 1581, 3207, 6851, 13897, 18173, 20553, 33139, 41691, 54519, 99417, 236249, 430807, 563363, 708747, 1292421, 1690089, 7323719, 21971157]

約数ペア:

[(1, 21971157), (3, 7323719), (13, 1690089), (17, 1292421), (31, 708747), (39, 563363), (51, 430807), (93, 236249), (221, 99417), (403, 54519), (527, 41691), (663, 33139), (1069, 20553), (1209, 18173), (1581, 13897), (3207, 6851)]