30815920

素因数分解:

$2^4\times 5^1\times {\mathrm{385199}}^1$

素因数の和:385212

約数の個数: 20

約数和(自身を含む): 71647200

約数和(自身を除く): 40831280

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 385199, 770398, 1540796, 1925995, 3081592, 3851990, 6163184, 7703980, 15407960, 30815920]

約数ペア:

[(1, 30815920), (2, 15407960), (4, 7703980), (5, 6163184), (8, 3851990), (10, 3081592), (16, 1925995), (20, 1540796), (40, 770398), (80, 385199)]