21900525

素因数分解:

$3^1\times 5^2\times {\mathrm{61}}^1\times {\mathrm{4787}}^1$

素因数の和:4861

約数の個数: 24

約数和(自身を含む): 36810144

約数和(自身を除く): 14909619

約数列:

[1, 3, 5, 15, 25, 61, 75, 183, 305, 915, 1525, 4575, 4787, 14361, 23935, 71805, 119675, 292007, 359025, 876021, 1460035, 4380105, 7300175, 21900525]

約数ペア:

[(1, 21900525), (3, 7300175), (5, 4380105), (15, 1460035), (25, 876021), (61, 359025), (75, 292007), (183, 119675), (305, 71805), (915, 23935), (1525, 14361), (4575, 4787)]