257631348

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{157}}^2$

素因数の和:401

約数の個数: 72

約数和(自身を含む): 661255392

約数和(自身を除く): 403624044

約数列:

[1, 2, 3, 4, 6, 12, 13, 26, 39, 52, 67, 78, 134, 156, 157, 201, 268, 314, 402, 471, 628, 804, 871, 942, 1742, 1884, 2041, 2613, 3484, 4082, 5226, 6123, 8164, 10452, 10519, 12246, 21038, 24492, 24649, 31557, 42076, 49298, 63114, 73947, 98596, 126228, 136747, 147894, 273494, 295788, 320437, 410241, 546988, 640874, 820482, 961311, 1281748, 1640964, 1651483, 1922622, 3302966, 3845244, 4954449, 6605932, 9908898, 19817796, 21469279, 42938558, 64407837, 85877116, 128815674, 257631348]

約数ペア:

[(1, 257631348), (2, 128815674), (3, 85877116), (4, 64407837), (6, 42938558), (12, 21469279), (13, 19817796), (26, 9908898), (39, 6605932), (52, 4954449), (67, 3845244), (78, 3302966), (134, 1922622), (156, 1651483), (157, 1640964), (201, 1281748), (268, 961311), (314, 820482), (402, 640874), (471, 546988), (628, 410241), (804, 320437), (871, 295788), (942, 273494), (1742, 147894), (1884, 136747), (2041, 126228), (2613, 98596), (3484, 73947), (4082, 63114), (5226, 49298), (6123, 42076), (8164, 31557), (10452, 24649), (10519, 24492), (12246, 21038)]