256406864

素因数分解:

$2^4\times 7^1\times {\mathrm{29}}^1\times {\mathrm{89}}^1\times {\mathrm{887}}^1$

素因数の和:1020

約数の個数: 80

約数和(自身を含む): 594604800

約数和(自身を除く): 338197936

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 29, 56, 58, 89, 112, 116, 178, 203, 232, 356, 406, 464, 623, 712, 812, 887, 1246, 1424, 1624, 1774, 2492, 2581, 3248, 3548, 4984, 5162, 6209, 7096, 9968, 10324, 12418, 14192, 18067, 20648, 24836, 25723, 36134, 41296, 49672, 51446, 72268, 78943, 99344, 102892, 144536, 157886, 180061, 205784, 289072, 315772, 360122, 411568, 552601, 631544, 720244, 1105202, 1263088, 1440488, 2210404, 2289347, 2880976, 4420808, 4578694, 8841616, 9157388, 16025429, 18314776, 32050858, 36629552, 64101716, 128203432, 256406864]

約数ペア:

[(1, 256406864), (2, 128203432), (4, 64101716), (7, 36629552), (8, 32050858), (14, 18314776), (16, 16025429), (28, 9157388), (29, 8841616), (56, 4578694), (58, 4420808), (89, 2880976), (112, 2289347), (116, 2210404), (178, 1440488), (203, 1263088), (232, 1105202), (356, 720244), (406, 631544), (464, 552601), (623, 411568), (712, 360122), (812, 315772), (887, 289072), (1246, 205784), (1424, 180061), (1624, 157886), (1774, 144536), (2492, 102892), (2581, 99344), (3248, 78943), (3548, 72268), (4984, 51446), (5162, 49672), (6209, 41296), (7096, 36134), (9968, 25723), (10324, 24836), (12418, 20648), (14192, 18067)]