257986890

素因数分解:

$2^1\times 3^3\times 5^1\times 7^1\times {\mathrm{136501}}^1$

素因数の和:136524

約数の個数: 64

約数和(自身を含む): 786251520

約数和(自身を除く): 528264630

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 14, 15, 18, 21, 27, 30, 35, 42, 45, 54, 63, 70, 90, 105, 126, 135, 189, 210, 270, 315, 378, 630, 945, 1890, 136501, 273002, 409503, 682505, 819006, 955507, 1228509, 1365010, 1911014, 2047515, 2457018, 2866521, 3685527, 4095030, 4777535, 5733042, 6142545, 7371054, 8599563, 9555070, 12285090, 14332605, 17199126, 18427635, 25798689, 28665210, 36855270, 42997815, 51597378, 85995630, 128993445, 257986890]

約数ペア:

[(1, 257986890), (2, 128993445), (3, 85995630), (5, 51597378), (6, 42997815), (7, 36855270), (9, 28665210), (10, 25798689), (14, 18427635), (15, 17199126), (18, 14332605), (21, 12285090), (27, 9555070), (30, 8599563), (35, 7371054), (42, 6142545), (45, 5733042), (54, 4777535), (63, 4095030), (70, 3685527), (90, 2866521), (105, 2457018), (126, 2047515), (135, 1911014), (189, 1365010), (210, 1228509), (270, 955507), (315, 819006), (378, 682505), (630, 409503), (945, 273002), (1890, 136501)]