721561356

素因数分解:

$2^2\times 3^2\times {\mathrm{71}}^1\times {\mathrm{197}}^1\times {\mathrm{1433}}^1$

素因数の和:1711

約数の個数: 72

約数和(自身を含む): 1860322464

約数和(自身を除く): 1138761108

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 71, 142, 197, 213, 284, 394, 426, 591, 639, 788, 852, 1182, 1278, 1433, 1773, 2364, 2556, 2866, 3546, 4299, 5732, 7092, 8598, 12897, 13987, 17196, 25794, 27974, 41961, 51588, 55948, 83922, 101743, 125883, 167844, 203486, 251766, 282301, 305229, 406972, 503532, 564602, 610458, 846903, 915687, 1129204, 1220916, 1693806, 1831374, 2540709, 3387612, 3662748, 5081418, 10162836, 20043371, 40086742, 60130113, 80173484, 120260226, 180390339, 240520452, 360780678, 721561356]

約数ペア:

[(1, 721561356), (2, 360780678), (3, 240520452), (4, 180390339), (6, 120260226), (9, 80173484), (12, 60130113), (18, 40086742), (36, 20043371), (71, 10162836), (142, 5081418), (197, 3662748), (213, 3387612), (284, 2540709), (394, 1831374), (426, 1693806), (591, 1220916), (639, 1129204), (788, 915687), (852, 846903), (1182, 610458), (1278, 564602), (1433, 503532), (1773, 406972), (2364, 305229), (2556, 282301), (2866, 251766), (3546, 203486), (4299, 167844), (5732, 125883), (7092, 101743), (8598, 83922), (12897, 55948), (13987, 51588), (17196, 41961), (25794, 27974)]