21855915

素因数分解:

$3^2\times 5^1\times {\mathrm{463}}^1\times {\mathrm{1049}}^1$

素因数の和:1523

約数の個数: 24

約数和(自身を含む): 38001600

約数和(自身を除く): 16145685

約数列:

[1, 3, 5, 9, 15, 45, 463, 1049, 1389, 2315, 3147, 4167, 5245, 6945, 9441, 15735, 20835, 47205, 485687, 1457061, 2428435, 4371183, 7285305, 21855915]

約数ペア:

[(1, 21855915), (3, 7285305), (5, 4371183), (9, 2428435), (15, 1457061), (45, 485687), (463, 47205), (1049, 20835), (1389, 15735), (2315, 9441), (3147, 6945), (4167, 5245)]