39866920

素因数分解:

$2^3\times 5^1\times {\mathrm{521}}^1\times {\mathrm{1913}}^1$

素因数の和:2445

約数の個数: 32

約数和(自身を含む): 89919720

約数和(自身を除く): 50052800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 521, 1042, 1913, 2084, 2605, 3826, 4168, 5210, 7652, 9565, 10420, 15304, 19130, 20840, 38260, 76520, 996673, 1993346, 3986692, 4983365, 7973384, 9966730, 19933460, 39866920]

約数ペア:

[(1, 39866920), (2, 19933460), (4, 9966730), (5, 7973384), (8, 4983365), (10, 3986692), (20, 1993346), (40, 996673), (521, 76520), (1042, 38260), (1913, 20840), (2084, 19130), (2605, 15304), (3826, 10420), (4168, 9565), (5210, 7652)]