187780

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{229}}^1$

素因数の和:279

約数の個数: 24

約数和(自身を含む): 405720

約数和(自身を除く): 217940

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 229, 410, 458, 820, 916, 1145, 2290, 4580, 9389, 18778, 37556, 46945, 93890, 187780]

約数ペア:

[(1, 187780), (2, 93890), (4, 46945), (5, 37556), (10, 18778), (20, 9389), (41, 4580), (82, 2290), (164, 1145), (205, 916), (229, 820), (410, 458)]