256517912

素因数分解:

$2^3\times 7^1\times {\mathrm{73}}^1\times {\mathrm{131}}^1\times {\mathrm{479}}^1$

素因数の和:696

約数の個数: 64

約数和(自身を含む): 562636800

約数和(自身を除く): 306118888

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 73, 131, 146, 262, 292, 479, 511, 524, 584, 917, 958, 1022, 1048, 1834, 1916, 2044, 3353, 3668, 3832, 4088, 6706, 7336, 9563, 13412, 19126, 26824, 34967, 38252, 62749, 66941, 69934, 76504, 125498, 133882, 139868, 244769, 250996, 267764, 279736, 439243, 489538, 501992, 535528, 878486, 979076, 1756972, 1958152, 3513944, 4580677, 9161354, 18322708, 32064739, 36645416, 64129478, 128258956, 256517912]

約数ペア:

[(1, 256517912), (2, 128258956), (4, 64129478), (7, 36645416), (8, 32064739), (14, 18322708), (28, 9161354), (56, 4580677), (73, 3513944), (131, 1958152), (146, 1756972), (262, 979076), (292, 878486), (479, 535528), (511, 501992), (524, 489538), (584, 439243), (917, 279736), (958, 267764), (1022, 250996), (1048, 244769), (1834, 139868), (1916, 133882), (2044, 125498), (3353, 76504), (3668, 69934), (3832, 66941), (4088, 62749), (6706, 38252), (7336, 34967), (9563, 26824), (13412, 19126)]