19304990

素因数分解:

$2^1\times 5^1\times {\mathrm{89}}^1\times {\mathrm{109}}^1\times {\mathrm{199}}^1$

素因数の和:404

約数の個数: 32

約数和(自身を含む): 35640000

約数和(自身を除く): 16335010

約数列:

[1, 2, 5, 10, 89, 109, 178, 199, 218, 398, 445, 545, 890, 995, 1090, 1990, 9701, 17711, 19402, 21691, 35422, 43382, 48505, 88555, 97010, 108455, 177110, 216910, 1930499, 3860998, 9652495, 19304990]

約数ペア:

[(1, 19304990), (2, 9652495), (5, 3860998), (10, 1930499), (89, 216910), (109, 177110), (178, 108455), (199, 97010), (218, 88555), (398, 48505), (445, 43382), (545, 35422), (890, 21691), (995, 19402), (1090, 17711), (1990, 9701)]