19749680

素因数分解:

$2^4\times 5^1\times {\mathrm{173}}^1\times {\mathrm{1427}}^1$

素因数の和:1613

約数の個数: 40

約数和(自身を含む): 46215792

約数和(自身を除く): 26466112

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 173, 346, 692, 865, 1384, 1427, 1730, 2768, 2854, 3460, 5708, 6920, 7135, 11416, 13840, 14270, 22832, 28540, 57080, 114160, 246871, 493742, 987484, 1234355, 1974968, 2468710, 3949936, 4937420, 9874840, 19749680]

約数ペア:

[(1, 19749680), (2, 9874840), (4, 4937420), (5, 3949936), (8, 2468710), (10, 1974968), (16, 1234355), (20, 987484), (40, 493742), (80, 246871), (173, 114160), (346, 57080), (692, 28540), (865, 22832), (1384, 14270), (1427, 13840), (1730, 11416), (2768, 7135), (2854, 6920), (3460, 5708)]