21887025

素因数分解:

$3^1\times 5^2\times {\mathrm{29}}^2\times {\mathrm{347}}^1$

素因数の和:418

約数の個数: 36

約数和(自身を含む): 37585392

約数和(自身を除く): 15698367

約数列:

[1, 3, 5, 15, 25, 29, 75, 87, 145, 347, 435, 725, 841, 1041, 1735, 2175, 2523, 4205, 5205, 8675, 10063, 12615, 21025, 26025, 30189, 50315, 63075, 150945, 251575, 291827, 754725, 875481, 1459135, 4377405, 7295675, 21887025]

約数ペア:

[(1, 21887025), (3, 7295675), (5, 4377405), (15, 1459135), (25, 875481), (29, 754725), (75, 291827), (87, 251575), (145, 150945), (347, 63075), (435, 50315), (725, 30189), (841, 26025), (1041, 21025), (1735, 12615), (2175, 10063), (2523, 8675), (4205, 5205)]