21184725

素因数分解:

$3^1\times 5^2\times {\mathrm{23}}^1\times {\mathrm{12281}}^1$

素因数の和:12317

約数の個数: 24

約数和(自身を含む): 36551232

約数和(自身を除く): 15366507

約数列:

[1, 3, 5, 15, 23, 25, 69, 75, 115, 345, 575, 1725, 12281, 36843, 61405, 184215, 282463, 307025, 847389, 921075, 1412315, 4236945, 7061575, 21184725]

約数ペア:

[(1, 21184725), (3, 7061575), (5, 4236945), (15, 1412315), (23, 921075), (25, 847389), (69, 307025), (75, 282463), (115, 184215), (345, 61405), (575, 36843), (1725, 12281)]