81900884

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{47}}^2$

素因数の和:165

約数の個数: 72

約数和(自身を含む): 169870848

約数和(自身を除く): 87969964

約数列:

[1, 2, 4, 13, 23, 26, 31, 46, 47, 52, 62, 92, 94, 124, 188, 299, 403, 598, 611, 713, 806, 1081, 1196, 1222, 1426, 1457, 1612, 2162, 2209, 2444, 2852, 2914, 4324, 4418, 5828, 8836, 9269, 14053, 18538, 18941, 28106, 28717, 33511, 37076, 37882, 50807, 56212, 57434, 67022, 68479, 75764, 101614, 114868, 134044, 136958, 203228, 273916, 435643, 660491, 871286, 890227, 1320982, 1575017, 1742572, 1780454, 2641964, 3150034, 3560908, 6300068, 20475221, 40950442, 81900884]

約数ペア:

[(1, 81900884), (2, 40950442), (4, 20475221), (13, 6300068), (23, 3560908), (26, 3150034), (31, 2641964), (46, 1780454), (47, 1742572), (52, 1575017), (62, 1320982), (92, 890227), (94, 871286), (124, 660491), (188, 435643), (299, 273916), (403, 203228), (598, 136958), (611, 134044), (713, 114868), (806, 101614), (1081, 75764), (1196, 68479), (1222, 67022), (1426, 57434), (1457, 56212), (1612, 50807), (2162, 37882), (2209, 37076), (2444, 33511), (2852, 28717), (2914, 28106), (4324, 18941), (4418, 18538), (5828, 14053), (8836, 9269)]