21540908

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{223}}^1$

素因数の和:318

約数の個数: 48

約数和(自身を含む): 42147840

約数和(自身を除く): 20606932

約数列:

[1, 2, 4, 19, 31, 38, 41, 62, 76, 82, 124, 164, 223, 446, 589, 779, 892, 1178, 1271, 1558, 2356, 2542, 3116, 4237, 5084, 6913, 8474, 9143, 13826, 16948, 18286, 24149, 27652, 36572, 48298, 96596, 131347, 173717, 262694, 283433, 347434, 525388, 566866, 694868, 1133732, 5385227, 10770454, 21540908]

約数ペア:

[(1, 21540908), (2, 10770454), (4, 5385227), (19, 1133732), (31, 694868), (38, 566866), (41, 525388), (62, 347434), (76, 283433), (82, 262694), (124, 173717), (164, 131347), (223, 96596), (446, 48298), (589, 36572), (779, 27652), (892, 24149), (1178, 18286), (1271, 16948), (1558, 13826), (2356, 9143), (2542, 8474), (3116, 6913), (4237, 5084)]