644579375

素因数分解:

$5^4\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{53}}^1\times {\mathrm{61}}^1$

素因数の和:174

約数の個数: 80

約数和(自身を含む): 941323680

約数和(自身を除く): 296744305

約数列:

[1, 5, 11, 25, 29, 53, 55, 61, 125, 145, 265, 275, 305, 319, 583, 625, 671, 725, 1325, 1375, 1525, 1537, 1595, 1769, 2915, 3233, 3355, 3625, 6625, 6875, 7625, 7685, 7975, 8845, 14575, 16165, 16775, 16907, 18125, 19459, 33125, 35563, 38125, 38425, 39875, 44225, 72875, 80825, 83875, 84535, 93757, 97295, 177815, 192125, 199375, 221125, 364375, 404125, 419375, 422675, 468785, 486475, 889075, 960625, 1031327, 1105625, 2020625, 2113375, 2343925, 2432375, 4445375, 5156635, 10566875, 11719625, 12161875, 22226875, 25783175, 58598125, 128915875, 644579375]

約数ペア:

[(1, 644579375), (5, 128915875), (11, 58598125), (25, 25783175), (29, 22226875), (53, 12161875), (55, 11719625), (61, 10566875), (125, 5156635), (145, 4445375), (265, 2432375), (275, 2343925), (305, 2113375), (319, 2020625), (583, 1105625), (625, 1031327), (671, 960625), (725, 889075), (1325, 486475), (1375, 468785), (1525, 422675), (1537, 419375), (1595, 404125), (1769, 364375), (2915, 221125), (3233, 199375), (3355, 192125), (3625, 177815), (6625, 97295), (6875, 93757), (7625, 84535), (7685, 83875), (7975, 80825), (8845, 72875), (14575, 44225), (16165, 39875), (16775, 38425), (16907, 38125), (18125, 35563), (19459, 33125)]