216820243880

素因数分解:

$2^3\times 5^1\times {\mathrm{5420506097}}^1$

素因数の和:5420506108

約数の個数: 16

約数和(自身を含む): 487845548820

約数和(自身を除く): 271025304940

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 5420506097, 10841012194, 21682024388, 27102530485, 43364048776, 54205060970, 108410121940, 216820243880]

約数ペア:

[(1, 216820243880), (2, 108410121940), (4, 54205060970), (5, 43364048776), (8, 27102530485), (10, 21682024388), (20, 10841012194), (40, 5420506097)]