19047760

素因数分解:

$2^4\times 5^1\times {\mathrm{457}}^1\times {\mathrm{521}}^1$

素因数の和:991

約数の個数: 40

約数和(自身を含む): 44468136

約数和(自身を除く): 25420376

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 457, 521, 914, 1042, 1828, 2084, 2285, 2605, 3656, 4168, 4570, 5210, 7312, 8336, 9140, 10420, 18280, 20840, 36560, 41680, 238097, 476194, 952388, 1190485, 1904776, 2380970, 3809552, 4761940, 9523880, 19047760]

約数ペア:

[(1, 19047760), (2, 9523880), (4, 4761940), (5, 3809552), (8, 2380970), (10, 1904776), (16, 1190485), (20, 952388), (40, 476194), (80, 238097), (457, 41680), (521, 36560), (914, 20840), (1042, 18280), (1828, 10420), (2084, 9140), (2285, 8336), (2605, 7312), (3656, 5210), (4168, 4570)]