19968225

素因数分解:

$3^1\times 5^2\times {\mathrm{443}}^1\times {\mathrm{601}}^1$

素因数の和:1057

約数の個数: 24

約数和(自身を含む): 33143712

約数和(自身を除く): 13175487

約数列:

[1, 3, 5, 15, 25, 75, 443, 601, 1329, 1803, 2215, 3005, 6645, 9015, 11075, 15025, 33225, 45075, 266243, 798729, 1331215, 3993645, 6656075, 19968225]

約数ペア:

[(1, 19968225), (3, 6656075), (5, 3993645), (15, 1331215), (25, 798729), (75, 266243), (443, 45075), (601, 33225), (1329, 15025), (1803, 11075), (2215, 9015), (3005, 6645)]