20816210

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{89}}^1\times {\mathrm{1231}}^1$

素因数の和:1346

約数の個数: 32

約数和(自身を含む): 39916800

約数和(自身を除く): 19100590

約数列:

[1, 2, 5, 10, 19, 38, 89, 95, 178, 190, 445, 890, 1231, 1691, 2462, 3382, 6155, 8455, 12310, 16910, 23389, 46778, 109559, 116945, 219118, 233890, 547795, 1095590, 2081621, 4163242, 10408105, 20816210]

約数ペア:

[(1, 20816210), (2, 10408105), (5, 4163242), (10, 2081621), (19, 1095590), (38, 547795), (89, 233890), (95, 219118), (178, 116945), (190, 109559), (445, 46778), (890, 23389), (1231, 16910), (1691, 12310), (2462, 8455), (3382, 6155)]