21199455

素因数分解:

$3^3\times 5^1\times {\mathrm{373}}^1\times {\mathrm{421}}^1$

素因数の和:808

約数の個数: 32

約数和(自身を含む): 37878720

約数和(自身を除く): 16679265

約数列:

[1, 3, 5, 9, 15, 27, 45, 135, 373, 421, 1119, 1263, 1865, 2105, 3357, 3789, 5595, 6315, 10071, 11367, 16785, 18945, 50355, 56835, 157033, 471099, 785165, 1413297, 2355495, 4239891, 7066485, 21199455]

約数ペア:

[(1, 21199455), (3, 7066485), (5, 4239891), (9, 2355495), (15, 1413297), (27, 785165), (45, 471099), (135, 157033), (373, 56835), (421, 50355), (1119, 18945), (1263, 16785), (1865, 11367), (2105, 10071), (3357, 6315), (3789, 5595)]