21388395076

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{3181}}^1\times {\mathrm{88471}}^1$

素因数の和:91675

約数の個数: 24

約数和(自身を含む): 39412506560

約数和(自身を除く): 18024111484

約数列:

[1, 2, 4, 19, 38, 76, 3181, 6362, 12724, 60439, 88471, 120878, 176942, 241756, 353884, 1680949, 3361898, 6723796, 281426251, 562852502, 1125705004, 5347098769, 10694197538, 21388395076]

約数ペア:

[(1, 21388395076), (2, 10694197538), (4, 5347098769), (19, 1125705004), (38, 562852502), (76, 281426251), (3181, 6723796), (6362, 3361898), (12724, 1680949), (60439, 353884), (88471, 241756), (120878, 176942)]