638336145

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{97}}^1\times {\mathrm{131}}^1\times {\mathrm{197}}^1$

素因数の和:450

約数の個数: 64

約数和(自身を含む): 1106493696

約数和(自身を除く): 468157551

約数列:

[1, 3, 5, 15, 17, 51, 85, 97, 131, 197, 255, 291, 393, 485, 591, 655, 985, 1455, 1649, 1965, 2227, 2955, 3349, 4947, 6681, 8245, 10047, 11135, 12707, 16745, 19109, 24735, 25807, 33405, 38121, 50235, 57327, 63535, 77421, 95545, 129035, 190605, 216019, 286635, 324853, 387105, 438719, 648057, 974559, 1080095, 1316157, 1624265, 2193595, 2503279, 3240285, 4872795, 6580785, 7509837, 12516395, 37549185, 42555743, 127667229, 212778715, 638336145]

約数ペア:

[(1, 638336145), (3, 212778715), (5, 127667229), (15, 42555743), (17, 37549185), (51, 12516395), (85, 7509837), (97, 6580785), (131, 4872795), (197, 3240285), (255, 2503279), (291, 2193595), (393, 1624265), (485, 1316157), (591, 1080095), (655, 974559), (985, 648057), (1455, 438719), (1649, 387105), (1965, 324853), (2227, 286635), (2955, 216019), (3349, 190605), (4947, 129035), (6681, 95545), (8245, 77421), (10047, 63535), (11135, 57327), (12707, 50235), (16745, 38121), (19109, 33405), (24735, 25807)]