20613405

素因数分解:

$3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{149}}^1\times {\mathrm{401}}^1$

素因数の和:581

約数の個数: 32

約数和(自身を含む): 34732800

約数和(自身を除く): 14119395

約数列:

[1, 3, 5, 15, 23, 69, 115, 149, 345, 401, 447, 745, 1203, 2005, 2235, 3427, 6015, 9223, 10281, 17135, 27669, 46115, 51405, 59749, 138345, 179247, 298745, 896235, 1374227, 4122681, 6871135, 20613405]

約数ペア:

[(1, 20613405), (3, 6871135), (5, 4122681), (15, 1374227), (23, 896235), (69, 298745), (115, 179247), (149, 138345), (345, 59749), (401, 51405), (447, 46115), (745, 27669), (1203, 17135), (2005, 10281), (2235, 9223), (3427, 6015)]