217524970

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^3\times {\mathrm{9901}}^1$

素因数の和:9947

約数の個数: 32

約数和(自身を含む): 424201680

約数和(自身を除く): 206676710

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 169, 338, 845, 1690, 2197, 4394, 9901, 10985, 19802, 21970, 49505, 99010, 128713, 257426, 643565, 1287130, 1673269, 3346538, 8366345, 16732690, 21752497, 43504994, 108762485, 217524970]

約数ペア:

[(1, 217524970), (2, 108762485), (5, 43504994), (10, 21752497), (13, 16732690), (26, 8366345), (65, 3346538), (130, 1673269), (169, 1287130), (338, 643565), (845, 257426), (1690, 128713), (2197, 99010), (4394, 49505), (9901, 21970), (10985, 19802)]