19399952

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{139}}^1$

素因数の和:232

約数の個数: 80

約数和(自身を含む): 45205440

約数和(自身を除く): 25805488

約数列:

[1, 2, 4, 8, 11, 13, 16, 22, 26, 44, 52, 61, 88, 104, 122, 139, 143, 176, 208, 244, 278, 286, 488, 556, 572, 671, 793, 976, 1112, 1144, 1342, 1529, 1586, 1807, 2224, 2288, 2684, 3058, 3172, 3614, 5368, 6116, 6344, 7228, 8479, 8723, 10736, 12232, 12688, 14456, 16958, 17446, 19877, 24464, 28912, 33916, 34892, 39754, 67832, 69784, 79508, 93269, 110227, 135664, 139568, 159016, 186538, 220454, 318032, 373076, 440908, 746152, 881816, 1212497, 1492304, 1763632, 2424994, 4849988, 9699976, 19399952]

約数ペア:

[(1, 19399952), (2, 9699976), (4, 4849988), (8, 2424994), (11, 1763632), (13, 1492304), (16, 1212497), (22, 881816), (26, 746152), (44, 440908), (52, 373076), (61, 318032), (88, 220454), (104, 186538), (122, 159016), (139, 139568), (143, 135664), (176, 110227), (208, 93269), (244, 79508), (278, 69784), (286, 67832), (488, 39754), (556, 34892), (572, 33916), (671, 28912), (793, 24464), (976, 19877), (1112, 17446), (1144, 16958), (1342, 14456), (1529, 12688), (1586, 12232), (1807, 10736), (2224, 8723), (2288, 8479), (2684, 7228), (3058, 6344), (3172, 6116), (3614, 5368)]