20538885

素因数分解:

$3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{1609}}^1$

素因数の和:1677

約数の個数: 32

約数和(自身を含む): 35239680

約数和(自身を除く): 14700795

約数列:

[1, 3, 5, 15, 23, 37, 69, 111, 115, 185, 345, 555, 851, 1609, 2553, 4255, 4827, 8045, 12765, 24135, 37007, 59533, 111021, 178599, 185035, 297665, 555105, 892995, 1369259, 4107777, 6846295, 20538885]

約数ペア:

[(1, 20538885), (3, 6846295), (5, 4107777), (15, 1369259), (23, 892995), (37, 555105), (69, 297665), (111, 185035), (115, 178599), (185, 111021), (345, 59533), (555, 37007), (851, 24135), (1609, 12765), (2553, 8045), (4255, 4827)]