18371440

素因数分解:

$2^4\times 5^1\times {\mathrm{131}}^1\times {\mathrm{1753}}^1$

素因数の和:1897

約数の個数: 40

約数和(自身を含む): 43064208

約数和(自身を除く): 24692768

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 131, 262, 524, 655, 1048, 1310, 1753, 2096, 2620, 3506, 5240, 7012, 8765, 10480, 14024, 17530, 28048, 35060, 70120, 140240, 229643, 459286, 918572, 1148215, 1837144, 2296430, 3674288, 4592860, 9185720, 18371440]

約数ペア:

[(1, 18371440), (2, 9185720), (4, 4592860), (5, 3674288), (8, 2296430), (10, 1837144), (16, 1148215), (20, 918572), (40, 459286), (80, 229643), (131, 140240), (262, 70120), (524, 35060), (655, 28048), (1048, 17530), (1310, 14024), (1753, 10480), (2096, 8765), (2620, 7012), (3506, 5240)]