20533557

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{67}}^1\times {\mathrm{251}}^1$

素因数の和:369

約数の個数: 32

約数和(自身を含む): 31256064

約数和(自身を除く): 10722507

約数列:

[1, 3, 11, 33, 37, 67, 111, 201, 251, 407, 737, 753, 1221, 2211, 2479, 2761, 7437, 8283, 9287, 16817, 27269, 27861, 50451, 81807, 102157, 184987, 306471, 554961, 622229, 1866687, 6844519, 20533557]

約数ペア:

[(1, 20533557), (3, 6844519), (11, 1866687), (33, 622229), (37, 554961), (67, 306471), (111, 184987), (201, 102157), (251, 81807), (407, 50451), (737, 27861), (753, 27269), (1221, 16817), (2211, 9287), (2479, 8283), (2761, 7437)]