18999880

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{27941}}^1$

素因数の和:27969

約数の個数: 32

約数和(自身を含む): 45266040

約数和(自身を除く): 26266160

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 340, 680, 27941, 55882, 111764, 139705, 223528, 279410, 474997, 558820, 949994, 1117640, 1899988, 2374985, 3799976, 4749970, 9499940, 18999880]

約数ペア:

[(1, 18999880), (2, 9499940), (4, 4749970), (5, 3799976), (8, 2374985), (10, 1899988), (17, 1117640), (20, 949994), (34, 558820), (40, 474997), (68, 279410), (85, 223528), (136, 139705), (170, 111764), (340, 55882), (680, 27941)]