20118285

素因数分解:

$3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{97}}^1\times {\mathrm{419}}^1$

素因数の和:538

約数の個数: 48

約数和(自身を含む): 38525760

約数和(自身を除く): 18407475

約数列:

[1, 3, 5, 9, 11, 15, 33, 45, 55, 97, 99, 165, 291, 419, 485, 495, 873, 1067, 1257, 1455, 2095, 3201, 3771, 4365, 4609, 5335, 6285, 9603, 13827, 16005, 18855, 23045, 40643, 41481, 48015, 69135, 121929, 203215, 207405, 365787, 447073, 609645, 1341219, 1828935, 2235365, 4023657, 6706095, 20118285]

約数ペア:

[(1, 20118285), (3, 6706095), (5, 4023657), (9, 2235365), (11, 1828935), (15, 1341219), (33, 609645), (45, 447073), (55, 365787), (97, 207405), (99, 203215), (165, 121929), (291, 69135), (419, 48015), (485, 41481), (495, 40643), (873, 23045), (1067, 18855), (1257, 16005), (1455, 13827), (2095, 9603), (3201, 6285), (3771, 5335), (4365, 4609)]