18970490

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{347}}^1$

素因数の和:443

約数の個数: 64

約数和(自身を含む): 43296768

約数和(自身を除く): 24326278

約数列:

[1, 2, 5, 7, 10, 11, 14, 22, 35, 55, 70, 71, 77, 110, 142, 154, 347, 355, 385, 497, 694, 710, 770, 781, 994, 1562, 1735, 2429, 2485, 3470, 3817, 3905, 4858, 4970, 5467, 7634, 7810, 10934, 12145, 19085, 24290, 24637, 26719, 27335, 38170, 49274, 53438, 54670, 123185, 133595, 172459, 246370, 267190, 271007, 344918, 542014, 862295, 1355035, 1724590, 1897049, 2710070, 3794098, 9485245, 18970490]

約数ペア:

[(1, 18970490), (2, 9485245), (5, 3794098), (7, 2710070), (10, 1897049), (11, 1724590), (14, 1355035), (22, 862295), (35, 542014), (55, 344918), (70, 271007), (71, 267190), (77, 246370), (110, 172459), (142, 133595), (154, 123185), (347, 54670), (355, 53438), (385, 49274), (497, 38170), (694, 27335), (710, 26719), (770, 24637), (781, 24290), (994, 19085), (1562, 12145), (1735, 10934), (2429, 7810), (2485, 7634), (3470, 5467), (3817, 4970), (3905, 4858)]