218860520

素因数分解:

$2^3\times 5^1\times {\mathrm{683}}^1\times {\mathrm{8011}}^1$

素因数の和:8705

約数の個数: 32

約数和(自身を含む): 493218720

約数和(自身を除く): 274358200

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 683, 1366, 2732, 3415, 5464, 6830, 8011, 13660, 16022, 27320, 32044, 40055, 64088, 80110, 160220, 320440, 5471513, 10943026, 21886052, 27357565, 43772104, 54715130, 109430260, 218860520]

約数ペア:

[(1, 218860520), (2, 109430260), (4, 54715130), (5, 43772104), (8, 27357565), (10, 21886052), (20, 10943026), (40, 5471513), (683, 320440), (1366, 160220), (2732, 80110), (3415, 64088), (5464, 40055), (6830, 32044), (8011, 27320), (13660, 16022)]