51721761

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{47}}^1\times {\mathrm{139}}^1$

素因数の和:238

約数の個数: 64

約数和(自身を含む): 90316800

約数和(自身を除く): 38595039

約数列:

[1, 3, 7, 13, 21, 29, 39, 47, 87, 91, 139, 141, 203, 273, 329, 377, 417, 609, 611, 973, 987, 1131, 1363, 1807, 1833, 2639, 2919, 4031, 4089, 4277, 5421, 6533, 7917, 9541, 12093, 12649, 12831, 17719, 19599, 28217, 28623, 37947, 45731, 52403, 53157, 84651, 84929, 124033, 137193, 157209, 189457, 254787, 366821, 372099, 568371, 594503, 1100463, 1326199, 1783509, 2462941, 3978597, 7388823, 17240587, 51721761]

約数ペア:

[(1, 51721761), (3, 17240587), (7, 7388823), (13, 3978597), (21, 2462941), (29, 1783509), (39, 1326199), (47, 1100463), (87, 594503), (91, 568371), (139, 372099), (141, 366821), (203, 254787), (273, 189457), (329, 157209), (377, 137193), (417, 124033), (609, 84929), (611, 84651), (973, 53157), (987, 52403), (1131, 45731), (1363, 37947), (1807, 28623), (1833, 28217), (2639, 19599), (2919, 17719), (4031, 12831), (4089, 12649), (4277, 12093), (5421, 9541), (6533, 7917)]