20621685

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{8539}}^1$

素因数の和:8577

約数の個数: 32

約数和(自身を含む): 39352320

約数和(自身を除く): 18730635

約数列:

[1, 3, 5, 7, 15, 21, 23, 35, 69, 105, 115, 161, 345, 483, 805, 2415, 8539, 25617, 42695, 59773, 128085, 179319, 196397, 298865, 589191, 896595, 981985, 1374779, 2945955, 4124337, 6873895, 20621685]

約数ペア:

[(1, 20621685), (3, 6873895), (5, 4124337), (7, 2945955), (15, 1374779), (21, 981985), (23, 896595), (35, 589191), (69, 298865), (105, 196397), (115, 179319), (161, 128085), (345, 59773), (483, 42695), (805, 25617), (2415, 8539)]