28316565

素因数分解:

$3^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{109}}^1\times {\mathrm{251}}^1$

素因数の和:394

約数の個数: 48

約数和(自身を含む): 51891840

約数和(自身を除く): 23575275

約数列:

[1, 3, 5, 9, 15, 23, 45, 69, 109, 115, 207, 251, 327, 345, 545, 753, 981, 1035, 1255, 1635, 2259, 2507, 3765, 4905, 5773, 7521, 11295, 12535, 17319, 22563, 27359, 28865, 37605, 51957, 82077, 86595, 112815, 136795, 246231, 259785, 410385, 629257, 1231155, 1887771, 3146285, 5663313, 9438855, 28316565]

約数ペア:

[(1, 28316565), (3, 9438855), (5, 5663313), (9, 3146285), (15, 1887771), (23, 1231155), (45, 629257), (69, 410385), (109, 259785), (115, 246231), (207, 136795), (251, 112815), (327, 86595), (345, 82077), (545, 51957), (753, 37605), (981, 28865), (1035, 27359), (1255, 22563), (1635, 17319), (2259, 12535), (2507, 11295), (3765, 7521), (4905, 5773)]