20737815

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{313}}^1\times {\mathrm{631}}^1$

素因数の和:959

約数の個数: 32

約数和(自身を含む): 38102016

約数和(自身を除く): 17364201

約数列:

[1, 3, 5, 7, 15, 21, 35, 105, 313, 631, 939, 1565, 1893, 2191, 3155, 4417, 4695, 6573, 9465, 10955, 13251, 22085, 32865, 66255, 197503, 592509, 987515, 1382521, 2962545, 4147563, 6912605, 20737815]

約数ペア:

[(1, 20737815), (3, 6912605), (5, 4147563), (7, 2962545), (15, 1382521), (21, 987515), (35, 592509), (105, 197503), (313, 66255), (631, 32865), (939, 22085), (1565, 13251), (1893, 10955), (2191, 9465), (3155, 6573), (4417, 4695)]