209699810

素因数分解:

$2^1\times 5^1\times {\mathrm{31}}^2\times {\mathrm{21821}}^1$

素因数の和:21890

約数の個数: 24

約数和(自身を含む): 390046428

約数和(自身を除く): 180346618

約数列:

[1, 2, 5, 10, 31, 62, 155, 310, 961, 1922, 4805, 9610, 21821, 43642, 109105, 218210, 676451, 1352902, 3382255, 6764510, 20969981, 41939962, 104849905, 209699810]

約数ペア:

[(1, 209699810), (2, 104849905), (5, 41939962), (10, 20969981), (31, 6764510), (62, 3382255), (155, 1352902), (310, 676451), (961, 218210), (1922, 109105), (4805, 43642), (9610, 21821)]