20441895

素因数分解:

$3^1\times 5^1\times {\mathrm{101}}^1\times {\mathrm{103}}^1\times {\mathrm{131}}^1$

素因数の和:343

約数の個数: 32

約数和(自身を含む): 33606144

約数和(自身を除く): 13164249

約数列:

[1, 3, 5, 15, 101, 103, 131, 303, 309, 393, 505, 515, 655, 1515, 1545, 1965, 10403, 13231, 13493, 31209, 39693, 40479, 52015, 66155, 67465, 156045, 198465, 202395, 1362793, 4088379, 6813965, 20441895]

約数ペア:

[(1, 20441895), (3, 6813965), (5, 4088379), (15, 1362793), (101, 202395), (103, 198465), (131, 156045), (303, 67465), (309, 66155), (393, 52015), (505, 40479), (515, 39693), (655, 31209), (1515, 13493), (1545, 13231), (1965, 10403)]