20497040

素因数分解:

$2^4\times 5^1\times {\mathrm{173}}^1\times {\mathrm{1481}}^1$

素因数の和:1667

約数の個数: 40

約数和(自身を含む): 47963448

約数和(自身を除く): 27466408

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 173, 346, 692, 865, 1384, 1481, 1730, 2768, 2962, 3460, 5924, 6920, 7405, 11848, 13840, 14810, 23696, 29620, 59240, 118480, 256213, 512426, 1024852, 1281065, 2049704, 2562130, 4099408, 5124260, 10248520, 20497040]

約数ペア:

[(1, 20497040), (2, 10248520), (4, 5124260), (5, 4099408), (8, 2562130), (10, 2049704), (16, 1281065), (20, 1024852), (40, 512426), (80, 256213), (173, 118480), (346, 59240), (692, 29620), (865, 23696), (1384, 14810), (1481, 13840), (1730, 11848), (2768, 7405), (2962, 6920), (3460, 5924)]