19677520

素因数分解:

$2^4\times 5^1\times {\mathrm{223}}^1\times {\mathrm{1103}}^1$

素因数の和:1339

約数の個数: 40

約数和(自身を含む): 45997056

約数和(自身を除く): 26319536

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 223, 446, 892, 1103, 1115, 1784, 2206, 2230, 3568, 4412, 4460, 5515, 8824, 8920, 11030, 17648, 17840, 22060, 44120, 88240, 245969, 491938, 983876, 1229845, 1967752, 2459690, 3935504, 4919380, 9838760, 19677520]

約数ペア:

[(1, 19677520), (2, 9838760), (4, 4919380), (5, 3935504), (8, 2459690), (10, 1967752), (16, 1229845), (20, 983876), (40, 491938), (80, 245969), (223, 88240), (446, 44120), (892, 22060), (1103, 17840), (1115, 17648), (1784, 11030), (2206, 8920), (2230, 8824), (3568, 5515), (4412, 4460)]