261957204

素因数分解:

$2^2\times 3^2\times {\mathrm{43}}^1\times {\mathrm{197}}^1\times {\mathrm{859}}^1$

素因数の和:1109

約数の個数: 72

約数和(自身を含む): 681801120

約数和(自身を除く): 419843916

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 43, 86, 129, 172, 197, 258, 387, 394, 516, 591, 774, 788, 859, 1182, 1548, 1718, 1773, 2364, 2577, 3436, 3546, 5154, 7092, 7731, 8471, 10308, 15462, 16942, 25413, 30924, 33884, 36937, 50826, 73874, 76239, 101652, 110811, 147748, 152478, 169223, 221622, 304956, 332433, 338446, 443244, 507669, 664866, 676892, 1015338, 1329732, 1523007, 2030676, 3046014, 6092028, 7276589, 14553178, 21829767, 29106356, 43659534, 65489301, 87319068, 130978602, 261957204]

約数ペア:

[(1, 261957204), (2, 130978602), (3, 87319068), (4, 65489301), (6, 43659534), (9, 29106356), (12, 21829767), (18, 14553178), (36, 7276589), (43, 6092028), (86, 3046014), (129, 2030676), (172, 1523007), (197, 1329732), (258, 1015338), (387, 676892), (394, 664866), (516, 507669), (591, 443244), (774, 338446), (788, 332433), (859, 304956), (1182, 221622), (1548, 169223), (1718, 152478), (1773, 147748), (2364, 110811), (2577, 101652), (3436, 76239), (3546, 73874), (5154, 50826), (7092, 36937), (7731, 33884), (8471, 30924), (10308, 25413), (15462, 16942)]