21676972

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{191}}^1\times {\mathrm{1669}}^1$

素因数の和:1881

約数の個数: 24

約数和(自身を含む): 40400640

約数和(自身を除く): 18723668

約数列:

[1, 2, 4, 17, 34, 68, 191, 382, 764, 1669, 3247, 3338, 6494, 6676, 12988, 28373, 56746, 113492, 318779, 637558, 1275116, 5419243, 10838486, 21676972]

約数ペア:

[(1, 21676972), (2, 10838486), (4, 5419243), (17, 1275116), (34, 637558), (68, 318779), (191, 113492), (382, 56746), (764, 28373), (1669, 12988), (3247, 6676), (3338, 6494)]