161691880

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{577471}}^1$

素因数の和:577489

約数の個数: 32

約数和(自身を含む): 415779840

約数和(自身を除く): 254087960

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 577471, 1154942, 2309884, 2887355, 4042297, 4619768, 5774710, 8084594, 11549420, 16169188, 20211485, 23098840, 32338376, 40422970, 80845940, 161691880]

約数ペア:

[(1, 161691880), (2, 80845940), (4, 40422970), (5, 32338376), (7, 23098840), (8, 20211485), (10, 16169188), (14, 11549420), (20, 8084594), (28, 5774710), (35, 4619768), (40, 4042297), (56, 2887355), (70, 2309884), (140, 1154942), (280, 577471)]