18000880

素因数分解:

$2^4\times 5^1\times {\mathrm{29}}^1\times {\mathrm{7759}}^1$

素因数の和:7801

約数の個数: 40

約数和(自身を含む): 43300800

約数和(自身を除く): 25299920

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 29, 40, 58, 80, 116, 145, 232, 290, 464, 580, 1160, 2320, 7759, 15518, 31036, 38795, 62072, 77590, 124144, 155180, 225011, 310360, 450022, 620720, 900044, 1125055, 1800088, 2250110, 3600176, 4500220, 9000440, 18000880]

約数ペア:

[(1, 18000880), (2, 9000440), (4, 4500220), (5, 3600176), (8, 2250110), (10, 1800088), (16, 1125055), (20, 900044), (29, 620720), (40, 450022), (58, 310360), (80, 225011), (116, 155180), (145, 124144), (232, 77590), (290, 62072), (464, 38795), (580, 31036), (1160, 15518), (2320, 7759)]