19674640

素因数分解:

$2^4\times 5^1\times {\mathrm{331}}^1\times {\mathrm{743}}^1$

素因数の和:1087

約数の個数: 40

約数和(自身を含む): 45943488

約数和(自身を除く): 26268848

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 331, 662, 743, 1324, 1486, 1655, 2648, 2972, 3310, 3715, 5296, 5944, 6620, 7430, 11888, 13240, 14860, 26480, 29720, 59440, 245933, 491866, 983732, 1229665, 1967464, 2459330, 3934928, 4918660, 9837320, 19674640]

約数ペア:

[(1, 19674640), (2, 9837320), (4, 4918660), (5, 3934928), (8, 2459330), (10, 1967464), (16, 1229665), (20, 983732), (40, 491866), (80, 245933), (331, 59440), (662, 29720), (743, 26480), (1324, 14860), (1486, 13240), (1655, 11888), (2648, 7430), (2972, 6620), (3310, 5944), (3715, 5296)]