18838480

素因数分解:

$2^4\times 5^1\times {\mathrm{181}}^1\times {\mathrm{1301}}^1$

素因数の和:1495

約数の個数: 40

約数和(自身を含む): 44075304

約数和(自身を除く): 25236824

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 181, 362, 724, 905, 1301, 1448, 1810, 2602, 2896, 3620, 5204, 6505, 7240, 10408, 13010, 14480, 20816, 26020, 52040, 104080, 235481, 470962, 941924, 1177405, 1883848, 2354810, 3767696, 4709620, 9419240, 18838480]

約数ペア:

[(1, 18838480), (2, 9419240), (4, 4709620), (5, 3767696), (8, 2354810), (10, 1883848), (16, 1177405), (20, 941924), (40, 470962), (80, 235481), (181, 104080), (362, 52040), (724, 26020), (905, 20816), (1301, 14480), (1448, 13010), (1810, 10408), (2602, 7240), (2896, 6505), (3620, 5204)]