21902768

素因数分解:

$2^4\times {\mathrm{409}}^1\times {\mathrm{3347}}^1$

素因数の和:3764

約数の個数: 20

約数和(自身を含む): 42553080

約数和(自身を除く): 20650312

約数列:

[1, 2, 4, 8, 16, 409, 818, 1636, 3272, 3347, 6544, 6694, 13388, 26776, 53552, 1368923, 2737846, 5475692, 10951384, 21902768]

約数ペア:

[(1, 21902768), (2, 10951384), (4, 5475692), (8, 2737846), (16, 1368923), (409, 53552), (818, 26776), (1636, 13388), (3272, 6694), (3347, 6544)]