665866825

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{53}}^1$

素因数の和:179

約数の個数: 96

約数和(自身を含む): 989936640

約数和(自身を除く): 324069815

約数列:

[1, 5, 13, 25, 29, 31, 43, 53, 65, 145, 155, 215, 265, 325, 377, 403, 559, 689, 725, 775, 899, 1075, 1247, 1325, 1333, 1537, 1643, 1885, 2015, 2279, 2795, 3445, 4495, 6235, 6665, 7685, 8215, 9425, 10075, 11395, 11687, 13975, 16211, 17225, 17329, 19981, 21359, 22475, 29627, 31175, 33325, 38425, 38657, 41075, 47647, 56975, 58435, 66091, 70649, 81055, 86645, 99905, 106795, 148135, 193285, 238235, 292175, 330455, 353245, 405275, 433225, 499525, 502541, 533975, 619411, 740675, 859183, 918437, 966425, 1191175, 1652275, 1766225, 2048821, 2512705, 3097055, 4295915, 4592185, 10244105, 12563525, 15485275, 21479575, 22960925, 26634673, 51220525, 133173365, 665866825]

約数ペア:

[(1, 665866825), (5, 133173365), (13, 51220525), (25, 26634673), (29, 22960925), (31, 21479575), (43, 15485275), (53, 12563525), (65, 10244105), (145, 4592185), (155, 4295915), (215, 3097055), (265, 2512705), (325, 2048821), (377, 1766225), (403, 1652275), (559, 1191175), (689, 966425), (725, 918437), (775, 859183), (899, 740675), (1075, 619411), (1247, 533975), (1325, 502541), (1333, 499525), (1537, 433225), (1643, 405275), (1885, 353245), (2015, 330455), (2279, 292175), (2795, 238235), (3445, 193285), (4495, 148135), (6235, 106795), (6665, 99905), (7685, 86645), (8215, 81055), (9425, 70649), (10075, 66091), (11395, 58435), (11687, 56975), (13975, 47647), (16211, 41075), (17225, 38657), (17329, 38425), (19981, 33325), (21359, 31175), (22475, 29627)]