321993685

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^2\times {\mathrm{61}}^1\times {\mathrm{281}}^1$

素因数の和:394

約数の個数: 48

約数和(自身を含む): 450877392

約数和(自身を除く): 128883707

約数列:

[1, 5, 13, 17, 61, 65, 85, 221, 281, 289, 305, 793, 1037, 1105, 1405, 1445, 3653, 3757, 3965, 4777, 5185, 13481, 17141, 17629, 18265, 18785, 23885, 62101, 67405, 81209, 85705, 88145, 222833, 229177, 291397, 310505, 406045, 1055717, 1114165, 1145885, 1456985, 3788161, 4953749, 5278585, 18940805, 24768745, 64398737, 321993685]

約数ペア:

[(1, 321993685), (5, 64398737), (13, 24768745), (17, 18940805), (61, 5278585), (65, 4953749), (85, 3788161), (221, 1456985), (281, 1145885), (289, 1114165), (305, 1055717), (793, 406045), (1037, 310505), (1105, 291397), (1405, 229177), (1445, 222833), (3653, 88145), (3757, 85705), (3965, 81209), (4777, 67405), (5185, 62101), (13481, 23885), (17141, 18785), (17629, 18265)]