19996158

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{691}}^1$

素因数の和:769

約数の個数: 64

約数和(自身を含む): 50222592

約数和(自身を除く): 30226434

約数列:

[1, 2, 3, 6, 7, 13, 14, 21, 26, 39, 42, 53, 78, 91, 106, 159, 182, 273, 318, 371, 546, 689, 691, 742, 1113, 1378, 1382, 2067, 2073, 2226, 4134, 4146, 4823, 4837, 8983, 9646, 9674, 14469, 14511, 17966, 26949, 28938, 29022, 36623, 53898, 62881, 73246, 109869, 125762, 188643, 219738, 256361, 377286, 476099, 512722, 769083, 952198, 1428297, 1538166, 2856594, 3332693, 6665386, 9998079, 19996158]

約数ペア:

[(1, 19996158), (2, 9998079), (3, 6665386), (6, 3332693), (7, 2856594), (13, 1538166), (14, 1428297), (21, 952198), (26, 769083), (39, 512722), (42, 476099), (53, 377286), (78, 256361), (91, 219738), (106, 188643), (159, 125762), (182, 109869), (273, 73246), (318, 62881), (371, 53898), (546, 36623), (689, 29022), (691, 28938), (742, 26949), (1113, 17966), (1378, 14511), (1382, 14469), (2067, 9674), (2073, 9646), (2226, 8983), (4134, 4837), (4146, 4823)]