256945136

素因数分解:

$2^4\times 7^1\times {\mathrm{89}}^1\times {\mathrm{149}}^1\times {\mathrm{173}}^1$

素因数の和:426

約数の個数: 80

約数和(自身を含む): 582552000

約数和(自身を除く): 325606864

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 89, 112, 149, 173, 178, 298, 346, 356, 596, 623, 692, 712, 1043, 1192, 1211, 1246, 1384, 1424, 2086, 2384, 2422, 2492, 2768, 4172, 4844, 4984, 8344, 9688, 9968, 13261, 15397, 16688, 19376, 25777, 26522, 30794, 51554, 53044, 61588, 92827, 103108, 106088, 107779, 123176, 180439, 185654, 206216, 212176, 215558, 246352, 360878, 371308, 412432, 431116, 721756, 742616, 862232, 1443512, 1485232, 1724464, 2294153, 2887024, 4588306, 9176612, 16059071, 18353224, 32118142, 36706448, 64236284, 128472568, 256945136]

約数ペア:

[(1, 256945136), (2, 128472568), (4, 64236284), (7, 36706448), (8, 32118142), (14, 18353224), (16, 16059071), (28, 9176612), (56, 4588306), (89, 2887024), (112, 2294153), (149, 1724464), (173, 1485232), (178, 1443512), (298, 862232), (346, 742616), (356, 721756), (596, 431116), (623, 412432), (692, 371308), (712, 360878), (1043, 246352), (1192, 215558), (1211, 212176), (1246, 206216), (1384, 185654), (1424, 180439), (2086, 123176), (2384, 107779), (2422, 106088), (2492, 103108), (2768, 92827), (4172, 61588), (4844, 53044), (4984, 51554), (8344, 30794), (9688, 26522), (9968, 25777), (13261, 19376), (15397, 16688)]