1811971760

素因数分解:

$2^4\times 5^1\times {\mathrm{2503}}^1\times {\mathrm{9049}}^1$

素因数の和:11565

約数の個数: 40

約数和(自身を含む): 4214983200

約数和(自身を除く): 2403011440

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 2503, 5006, 9049, 10012, 12515, 18098, 20024, 25030, 36196, 40048, 45245, 50060, 72392, 90490, 100120, 144784, 180980, 200240, 361960, 723920, 22649647, 45299294, 90598588, 113248235, 181197176, 226496470, 362394352, 452992940, 905985880, 1811971760]

約数ペア:

[(1, 1811971760), (2, 905985880), (4, 452992940), (5, 362394352), (8, 226496470), (10, 181197176), (16, 113248235), (20, 90598588), (40, 45299294), (80, 22649647), (2503, 723920), (5006, 361960), (9049, 200240), (10012, 180980), (12515, 144784), (18098, 100120), (20024, 90490), (25030, 72392), (36196, 50060), (40048, 45245)]