256249665

素因数分解:

$3^2\times 5^1\times 7^2\times {\mathrm{251}}^1\times {\mathrm{463}}^1$

素因数の和:739

約数の個数: 72

約数和(自身を含む): 519861888

約数和(自身を除く): 263612223

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 49, 63, 105, 147, 245, 251, 315, 441, 463, 735, 753, 1255, 1389, 1757, 2205, 2259, 2315, 3241, 3765, 4167, 5271, 6945, 8785, 9723, 11295, 12299, 15813, 16205, 20835, 22687, 26355, 29169, 36897, 48615, 61495, 68061, 79065, 110691, 113435, 116213, 145845, 184485, 204183, 340305, 348639, 553455, 581065, 813491, 1020915, 1045917, 1743195, 2440473, 4067455, 5229585, 5694437, 7321419, 12202365, 17083311, 28472185, 36607095, 51249933, 85416555, 256249665]

約数ペア:

[(1, 256249665), (3, 85416555), (5, 51249933), (7, 36607095), (9, 28472185), (15, 17083311), (21, 12202365), (35, 7321419), (45, 5694437), (49, 5229585), (63, 4067455), (105, 2440473), (147, 1743195), (245, 1045917), (251, 1020915), (315, 813491), (441, 581065), (463, 553455), (735, 348639), (753, 340305), (1255, 204183), (1389, 184485), (1757, 145845), (2205, 116213), (2259, 113435), (2315, 110691), (3241, 79065), (3765, 68061), (4167, 61495), (5271, 48615), (6945, 36897), (8785, 29169), (9723, 26355), (11295, 22687), (12299, 20835), (15813, 16205)]