404996920

素因数分解:

$2^3\times 5^1\times {\mathrm{2621}}^1\times {\mathrm{3863}}^1$

素因数の和:6495

約数の個数: 32

約数和(自身を含む): 911826720

約数和(自身を除く): 506829800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 2621, 3863, 5242, 7726, 10484, 13105, 15452, 19315, 20968, 26210, 30904, 38630, 52420, 77260, 104840, 154520, 10124923, 20249846, 40499692, 50624615, 80999384, 101249230, 202498460, 404996920]

約数ペア:

[(1, 404996920), (2, 202498460), (4, 101249230), (5, 80999384), (8, 50624615), (10, 40499692), (20, 20249846), (40, 10124923), (2621, 154520), (3863, 104840), (5242, 77260), (7726, 52420), (10484, 38630), (13105, 30904), (15452, 26210), (19315, 20968)]