20917755

素因数分解:

$3^2\times 5^1\times {\mathrm{103}}^1\times {\mathrm{4513}}^1$

素因数の和:4627

約数の個数: 24

約数和(自身を含む): 36617568

約数和(自身を除く): 15699813

約数列:

[1, 3, 5, 9, 15, 45, 103, 309, 515, 927, 1545, 4513, 4635, 13539, 22565, 40617, 67695, 203085, 464839, 1394517, 2324195, 4183551, 6972585, 20917755]

約数ペア:

[(1, 20917755), (3, 6972585), (5, 4183551), (9, 2324195), (15, 1394517), (45, 464839), (103, 203085), (309, 67695), (515, 40617), (927, 22565), (1545, 13539), (4513, 4635)]