18688190

素因数分解:

$2^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{193}}^1\times {\mathrm{421}}^1$

素因数の和:644

約数の個数: 32

約数和(自身を含む): 35366976

約数和(自身を除く): 16678786

約数列:

[1, 2, 5, 10, 23, 46, 115, 193, 230, 386, 421, 842, 965, 1930, 2105, 4210, 4439, 8878, 9683, 19366, 22195, 44390, 48415, 81253, 96830, 162506, 406265, 812530, 1868819, 3737638, 9344095, 18688190]

約数ペア:

[(1, 18688190), (2, 9344095), (5, 3737638), (10, 1868819), (23, 812530), (46, 406265), (115, 162506), (193, 96830), (230, 81253), (386, 48415), (421, 44390), (842, 22195), (965, 19366), (1930, 9683), (2105, 8878), (4210, 4439)]