78900220

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{379}}^1\times {\mathrm{1487}}^1$

素因数の和:1882

約数の個数: 48

約数和(自身を含む): 189987840

約数和(自身を除く): 111087620

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 379, 758, 1487, 1516, 1895, 2653, 2974, 3790, 5306, 5948, 7435, 7580, 10409, 10612, 13265, 14870, 20818, 26530, 29740, 41636, 52045, 53060, 104090, 208180, 563573, 1127146, 2254292, 2817865, 3945011, 5635730, 7890022, 11271460, 15780044, 19725055, 39450110, 78900220]

約数ペア:

[(1, 78900220), (2, 39450110), (4, 19725055), (5, 15780044), (7, 11271460), (10, 7890022), (14, 5635730), (20, 3945011), (28, 2817865), (35, 2254292), (70, 1127146), (140, 563573), (379, 208180), (758, 104090), (1487, 53060), (1516, 52045), (1895, 41636), (2653, 29740), (2974, 26530), (3790, 20818), (5306, 14870), (5948, 13265), (7435, 10612), (7580, 10409)]