20908265

素因数分解:

$5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{1367}}^1$

素因数の和:1421

約数の個数: 32

約数和(自身を含む): 31518720

約数和(自身を除く): 10610455

約数列:

[1, 5, 7, 19, 23, 35, 95, 115, 133, 161, 437, 665, 805, 1367, 2185, 3059, 6835, 9569, 15295, 25973, 31441, 47845, 129865, 157205, 181811, 220087, 597379, 909055, 1100435, 2986895, 4181653, 20908265]

約数ペア:

[(1, 20908265), (5, 4181653), (7, 2986895), (19, 1100435), (23, 909055), (35, 597379), (95, 220087), (115, 181811), (133, 157205), (161, 129865), (437, 47845), (665, 31441), (805, 25973), (1367, 15295), (2185, 9569), (3059, 6835)]