257512528

素因数分解:

$2^4\times 7^1\times {\mathrm{13}}^1\times {\mathrm{149}}^1\times {\mathrm{1187}}^1$

素因数の和:1364

約数の個数: 80

約数和(自身を含む): 618710400

約数和(自身を除く): 361197872

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 26, 28, 52, 56, 91, 104, 112, 149, 182, 208, 298, 364, 596, 728, 1043, 1187, 1192, 1456, 1937, 2086, 2374, 2384, 3874, 4172, 4748, 7748, 8309, 8344, 9496, 13559, 15431, 15496, 16618, 16688, 18992, 27118, 30862, 30992, 33236, 54236, 61724, 66472, 108017, 108472, 123448, 132944, 176863, 216034, 216944, 246896, 353726, 432068, 707452, 864136, 1238041, 1414904, 1728272, 2299219, 2476082, 2829808, 4598438, 4952164, 9196876, 9904328, 16094533, 18393752, 19808656, 32189066, 36787504, 64378132, 128756264, 257512528]

約数ペア:

[(1, 257512528), (2, 128756264), (4, 64378132), (7, 36787504), (8, 32189066), (13, 19808656), (14, 18393752), (16, 16094533), (26, 9904328), (28, 9196876), (52, 4952164), (56, 4598438), (91, 2829808), (104, 2476082), (112, 2299219), (149, 1728272), (182, 1414904), (208, 1238041), (298, 864136), (364, 707452), (596, 432068), (728, 353726), (1043, 246896), (1187, 216944), (1192, 216034), (1456, 176863), (1937, 132944), (2086, 123448), (2374, 108472), (2384, 108017), (3874, 66472), (4172, 61724), (4748, 54236), (7748, 33236), (8309, 30992), (8344, 30862), (9496, 27118), (13559, 18992), (15431, 16688), (15496, 16618)]