19209470

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{197}}^1\times {\mathrm{199}}^1$

素因数の和:417

約数の個数: 48

約数和(自身を含む): 40629600

約数和(自身を除く): 21420130

約数列:

[1, 2, 5, 7, 10, 14, 35, 49, 70, 98, 197, 199, 245, 394, 398, 490, 985, 995, 1379, 1393, 1970, 1990, 2758, 2786, 6895, 6965, 9653, 9751, 13790, 13930, 19306, 19502, 39203, 48265, 48755, 78406, 96530, 97510, 196015, 274421, 392030, 548842, 1372105, 1920947, 2744210, 3841894, 9604735, 19209470]

約数ペア:

[(1, 19209470), (2, 9604735), (5, 3841894), (7, 2744210), (10, 1920947), (14, 1372105), (35, 548842), (49, 392030), (70, 274421), (98, 196015), (197, 97510), (199, 96530), (245, 78406), (394, 48755), (398, 48265), (490, 39203), (985, 19502), (995, 19306), (1379, 13930), (1393, 13790), (1970, 9751), (1990, 9653), (2758, 6965), (2786, 6895)]