18297520

素因数分解:

$2^4\times 5^1\times {\mathrm{439}}^1\times {\mathrm{521}}^1$

素因数の和:973

約数の個数: 40

約数和(自身を含む): 42720480

約数和(自身を除く): 24422960

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 439, 521, 878, 1042, 1756, 2084, 2195, 2605, 3512, 4168, 4390, 5210, 7024, 8336, 8780, 10420, 17560, 20840, 35120, 41680, 228719, 457438, 914876, 1143595, 1829752, 2287190, 3659504, 4574380, 9148760, 18297520]

約数ペア:

[(1, 18297520), (2, 9148760), (4, 4574380), (5, 3659504), (8, 2287190), (10, 1829752), (16, 1143595), (20, 914876), (40, 457438), (80, 228719), (439, 41680), (521, 35120), (878, 20840), (1042, 17560), (1756, 10420), (2084, 8780), (2195, 8336), (2605, 7024), (3512, 5210), (4168, 4390)]