131238440

素因数分解:

$2^3\times 5^1\times {\mathrm{3280961}}^1$

素因数の和:3280972

約数の個数: 16

約数和(自身を含む): 295286580

約数和(自身を除く): 164048140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 3280961, 6561922, 13123844, 16404805, 26247688, 32809610, 65619220, 131238440]

約数ペア:

[(1, 131238440), (2, 65619220), (4, 32809610), (5, 26247688), (8, 16404805), (10, 13123844), (20, 6561922), (40, 3280961)]