289070920

素因数分解:

$2^3\times 5^1\times {\mathrm{1381}}^1\times {\mathrm{5233}}^1$

素因数の和:6625

約数の個数: 32

約数和(自身を含む): 651004920

約数和(自身を除く): 361934000

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1381, 2762, 5233, 5524, 6905, 10466, 11048, 13810, 20932, 26165, 27620, 41864, 52330, 55240, 104660, 209320, 7226773, 14453546, 28907092, 36133865, 57814184, 72267730, 144535460, 289070920]

約数ペア:

[(1, 289070920), (2, 144535460), (4, 72267730), (5, 57814184), (8, 36133865), (10, 28907092), (20, 14453546), (40, 7226773), (1381, 209320), (2762, 104660), (5233, 55240), (5524, 52330), (6905, 41864), (10466, 27620), (11048, 26165), (13810, 20932)]