19870396

素因数分解:

$2^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{691}}^1$

素因数の和:794

約数の個数: 48

約数和(自身を含む): 43402240

約数和(自身を除く): 23531844

約数列:

[1, 2, 4, 7, 13, 14, 26, 28, 52, 79, 91, 158, 182, 316, 364, 553, 691, 1027, 1106, 1382, 2054, 2212, 2764, 4108, 4837, 7189, 8983, 9674, 14378, 17966, 19348, 28756, 35932, 54589, 62881, 109178, 125762, 218356, 251524, 382123, 709657, 764246, 1419314, 1528492, 2838628, 4967599, 9935198, 19870396]

約数ペア:

[(1, 19870396), (2, 9935198), (4, 4967599), (7, 2838628), (13, 1528492), (14, 1419314), (26, 764246), (28, 709657), (52, 382123), (79, 251524), (91, 218356), (158, 125762), (182, 109178), (316, 62881), (364, 54589), (553, 35932), (691, 28756), (1027, 19348), (1106, 17966), (1382, 14378), (2054, 9674), (2212, 8983), (2764, 7189), (4108, 4837)]