21717890

素因数分解:

$2^1\times 5^1\times {\mathrm{37}}^1\times {\mathrm{79}}^1\times {\mathrm{743}}^1$

素因数の和:866

約数の個数: 32

約数和(自身を含む): 40711680

約数和(自身を除く): 18993790

約数列:

[1, 2, 5, 10, 37, 74, 79, 158, 185, 370, 395, 743, 790, 1486, 2923, 3715, 5846, 7430, 14615, 27491, 29230, 54982, 58697, 117394, 137455, 274910, 293485, 586970, 2171789, 4343578, 10858945, 21717890]

約数ペア:

[(1, 21717890), (2, 10858945), (5, 4343578), (10, 2171789), (37, 586970), (74, 293485), (79, 274910), (158, 137455), (185, 117394), (370, 58697), (395, 54982), (743, 29230), (790, 27491), (1486, 14615), (2923, 7430), (3715, 5846)]