1215204040

素因数分解:

$2^3\times 5^1\times {\mathrm{349}}^1\times {\mathrm{87049}}^1$

素因数の和:87409

約数の個数: 32

約数和(自身を含む): 2742075000

約数和(自身を除く): 1526870960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 349, 698, 1396, 1745, 2792, 3490, 6980, 13960, 87049, 174098, 348196, 435245, 696392, 870490, 1740980, 3481960, 30380101, 60760202, 121520404, 151900505, 243040808, 303801010, 607602020, 1215204040]

約数ペア:

[(1, 1215204040), (2, 607602020), (4, 303801010), (5, 243040808), (8, 151900505), (10, 121520404), (20, 60760202), (40, 30380101), (349, 3481960), (698, 1740980), (1396, 870490), (1745, 696392), (2792, 435245), (3490, 348196), (6980, 174098), (13960, 87049)]