21917860

素因数分解:

$2^2\times 5^1\times {\mathrm{199}}^1\times {\mathrm{5507}}^1$

素因数の和:5715

約数の個数: 24

約数和(自身を含む): 46267200

約数和(自身を除く): 24349340

約数列:

[1, 2, 4, 5, 10, 20, 199, 398, 796, 995, 1990, 3980, 5507, 11014, 22028, 27535, 55070, 110140, 1095893, 2191786, 4383572, 5479465, 10958930, 21917860]

約数ペア:

[(1, 21917860), (2, 10958930), (4, 5479465), (5, 4383572), (10, 2191786), (20, 1095893), (199, 110140), (398, 55070), (796, 27535), (995, 22028), (1990, 11014), (3980, 5507)]