19994285390

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{67}}^1\times {\mathrm{691}}^1\times {\mathrm{2273}}^1$

素因数の和:3057

約数の個数: 64

約数和(自身を含む): 38521923840

約数和(自身を除く): 18527638450

約数列:

[1, 2, 5, 10, 19, 38, 67, 95, 134, 190, 335, 670, 691, 1273, 1382, 2273, 2546, 3455, 4546, 6365, 6910, 11365, 12730, 13129, 22730, 26258, 43187, 46297, 65645, 86374, 92594, 131290, 152291, 215935, 231485, 304582, 431870, 462970, 761455, 879643, 1522910, 1570643, 1759286, 2893529, 3141286, 4398215, 5787058, 7853215, 8796430, 14467645, 15706430, 28935290, 29842217, 59684434, 105233081, 149211085, 210466162, 298422170, 526165405, 1052330810, 1999428539, 3998857078, 9997142695, 19994285390]

約数ペア:

[(1, 19994285390), (2, 9997142695), (5, 3998857078), (10, 1999428539), (19, 1052330810), (38, 526165405), (67, 298422170), (95, 210466162), (134, 149211085), (190, 105233081), (335, 59684434), (670, 29842217), (691, 28935290), (1273, 15706430), (1382, 14467645), (2273, 8796430), (2546, 7853215), (3455, 5787058), (4546, 4398215), (6365, 3141286), (6910, 2893529), (11365, 1759286), (12730, 1570643), (13129, 1522910), (22730, 879643), (26258, 761455), (43187, 462970), (46297, 431870), (65645, 304582), (86374, 231485), (92594, 215935), (131290, 152291)]