20118644

素因数分解:

$2^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{2909}}^1$

素因数の和:2952

約数の個数: 48

約数和(自身を含む): 45628800

約数和(自身を除く): 25510156

約数列:

[1, 2, 4, 7, 13, 14, 19, 26, 28, 38, 52, 76, 91, 133, 182, 247, 266, 364, 494, 532, 988, 1729, 2909, 3458, 5818, 6916, 11636, 20363, 37817, 40726, 55271, 75634, 81452, 110542, 151268, 221084, 264719, 386897, 529438, 718523, 773794, 1058876, 1437046, 1547588, 2874092, 5029661, 10059322, 20118644]

約数ペア:

[(1, 20118644), (2, 10059322), (4, 5029661), (7, 2874092), (13, 1547588), (14, 1437046), (19, 1058876), (26, 773794), (28, 718523), (38, 529438), (52, 386897), (76, 264719), (91, 221084), (133, 151268), (182, 110542), (247, 81452), (266, 75634), (364, 55271), (494, 40726), (532, 37817), (988, 20363), (1729, 11636), (2909, 6916), (3458, 5818)]