20662695

素因数分解:

$3^4\times 5^1\times {\mathrm{163}}^1\times {\mathrm{313}}^1$

素因数の和:493

約数の個数: 40

約数和(自身を含む): 37386096

約数和(自身を除く): 16723401

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 163, 313, 405, 489, 815, 939, 1467, 1565, 2445, 2817, 4401, 4695, 7335, 8451, 13203, 14085, 22005, 25353, 42255, 51019, 66015, 126765, 153057, 255095, 459171, 765285, 1377513, 2295855, 4132539, 6887565, 20662695]

約数ペア:

[(1, 20662695), (3, 6887565), (5, 4132539), (9, 2295855), (15, 1377513), (27, 765285), (45, 459171), (81, 255095), (135, 153057), (163, 126765), (313, 66015), (405, 51019), (489, 42255), (815, 25353), (939, 22005), (1467, 14085), (1565, 13203), (2445, 8451), (2817, 7335), (4401, 4695)]