21540110

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{73}}^1\times {\mathrm{1553}}^1$

素因数の和:1652

約数の個数: 32

約数和(自身を含む): 41398560

約数和(自身を除く): 19858450

約数列:

[1, 2, 5, 10, 19, 38, 73, 95, 146, 190, 365, 730, 1387, 1553, 2774, 3106, 6935, 7765, 13870, 15530, 29507, 59014, 113369, 147535, 226738, 295070, 566845, 1133690, 2154011, 4308022, 10770055, 21540110]

約数ペア:

[(1, 21540110), (2, 10770055), (5, 4308022), (10, 2154011), (19, 1133690), (38, 566845), (73, 295070), (95, 226738), (146, 147535), (190, 113369), (365, 59014), (730, 29507), (1387, 15530), (1553, 13870), (2774, 7765), (3106, 6935)]