81312875

素因数分解:

$5^3\times 7^1\times {\mathrm{19}}^1\times {\mathrm{67}}^1\times {\mathrm{73}}^1$

素因数の和:181

約数の個数: 64

約数和(自身を含む): 125598720

約数和(自身を除く): 44285845

約数列:

[1, 5, 7, 19, 25, 35, 67, 73, 95, 125, 133, 175, 335, 365, 469, 475, 511, 665, 875, 1273, 1387, 1675, 1825, 2345, 2375, 2555, 3325, 4891, 6365, 6935, 8375, 8911, 9125, 9709, 11725, 12775, 16625, 24455, 31825, 34237, 34675, 44555, 48545, 58625, 63875, 92929, 122275, 159125, 171185, 173375, 222775, 242725, 464645, 611375, 650503, 855925, 1113875, 1213625, 2323225, 3252515, 4279625, 11616125, 16262575, 81312875]

約数ペア:

[(1, 81312875), (5, 16262575), (7, 11616125), (19, 4279625), (25, 3252515), (35, 2323225), (67, 1213625), (73, 1113875), (95, 855925), (125, 650503), (133, 611375), (175, 464645), (335, 242725), (365, 222775), (469, 173375), (475, 171185), (511, 159125), (665, 122275), (875, 92929), (1273, 63875), (1387, 58625), (1675, 48545), (1825, 44555), (2345, 34675), (2375, 34237), (2555, 31825), (3325, 24455), (4891, 16625), (6365, 12775), (6935, 11725), (8375, 9709), (8911, 9125)]