721656

素因数分解:

$2^3\times 3^3\times {\mathrm{13}}^1\times {\mathrm{257}}^1$

素因数の和:285

約数の個数: 64

約数和(自身を含む): 2167200

約数和(自身を除く): 1445544

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 13, 18, 24, 26, 27, 36, 39, 52, 54, 72, 78, 104, 108, 117, 156, 216, 234, 257, 312, 351, 468, 514, 702, 771, 936, 1028, 1404, 1542, 2056, 2313, 2808, 3084, 3341, 4626, 6168, 6682, 6939, 9252, 10023, 13364, 13878, 18504, 20046, 26728, 27756, 30069, 40092, 55512, 60138, 80184, 90207, 120276, 180414, 240552, 360828, 721656]

約数ペア:

[(1, 721656), (2, 360828), (3, 240552), (4, 180414), (6, 120276), (8, 90207), (9, 80184), (12, 60138), (13, 55512), (18, 40092), (24, 30069), (26, 27756), (27, 26728), (36, 20046), (39, 18504), (52, 13878), (54, 13364), (72, 10023), (78, 9252), (104, 6939), (108, 6682), (117, 6168), (156, 4626), (216, 3341), (234, 3084), (257, 2808), (312, 2313), (351, 2056), (468, 1542), (514, 1404), (702, 1028), (771, 936)]