20609552

素因数分解:

$2^4\times {\mathrm{41}}^1\times {\mathrm{89}}^1\times {\mathrm{353}}^1$

素因数の和:491

約数の個数: 40

約数和(自身を含む): 41481720

約数和(自身を除く): 20872168

約数列:

[1, 2, 4, 8, 16, 41, 82, 89, 164, 178, 328, 353, 356, 656, 706, 712, 1412, 1424, 2824, 3649, 5648, 7298, 14473, 14596, 28946, 29192, 31417, 57892, 58384, 62834, 115784, 125668, 231568, 251336, 502672, 1288097, 2576194, 5152388, 10304776, 20609552]

約数ペア:

[(1, 20609552), (2, 10304776), (4, 5152388), (8, 2576194), (16, 1288097), (41, 502672), (82, 251336), (89, 231568), (164, 125668), (178, 115784), (328, 62834), (353, 58384), (356, 57892), (656, 31417), (706, 29192), (712, 28946), (1412, 14596), (1424, 14473), (2824, 7298), (3649, 5648)]