20072721

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{61}}^1\times {\mathrm{251}}^1$

素因数の和:357

約数の個数: 32

約数和(自身を含む): 29998080

約数和(自身を除く): 9925359

約数列:

[1, 3, 19, 23, 57, 61, 69, 183, 251, 437, 753, 1159, 1311, 1403, 3477, 4209, 4769, 5773, 14307, 15311, 17319, 26657, 45933, 79971, 109687, 290909, 329061, 352153, 872727, 1056459, 6690907, 20072721]

約数ペア:

[(1, 20072721), (3, 6690907), (19, 1056459), (23, 872727), (57, 352153), (61, 329061), (69, 290909), (183, 109687), (251, 79971), (437, 45933), (753, 26657), (1159, 17319), (1311, 15311), (1403, 14307), (3477, 5773), (4209, 4769)]