21486855

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{251}}^1\times {\mathrm{439}}^1$

素因数の和:711

約数の個数: 32

約数和(自身を含む): 37255680

約数和(自身を除く): 15768825

約数列:

[1, 3, 5, 13, 15, 39, 65, 195, 251, 439, 753, 1255, 1317, 2195, 3263, 3765, 5707, 6585, 9789, 16315, 17121, 28535, 48945, 85605, 110189, 330567, 550945, 1432457, 1652835, 4297371, 7162285, 21486855]

約数ペア:

[(1, 21486855), (3, 7162285), (5, 4297371), (13, 1652835), (15, 1432457), (39, 550945), (65, 330567), (195, 110189), (251, 85605), (439, 48945), (753, 28535), (1255, 17121), (1317, 16315), (2195, 9789), (3263, 6585), (3765, 5707)]