20200971

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{197}}^1\times {\mathrm{257}}^1$

素因数の和:483

約数の個数: 32

約数和(自身を含む): 32693760

約数和(自身を除く): 12492789

約数列:

[1, 3, 7, 19, 21, 57, 133, 197, 257, 399, 591, 771, 1379, 1799, 3743, 4137, 4883, 5397, 11229, 14649, 26201, 34181, 50629, 78603, 102543, 151887, 354403, 961951, 1063209, 2885853, 6733657, 20200971]

約数ペア:

[(1, 20200971), (3, 6733657), (7, 2885853), (19, 1063209), (21, 961951), (57, 354403), (133, 151887), (197, 102543), (257, 78603), (399, 50629), (591, 34181), (771, 26201), (1379, 14649), (1799, 11229), (3743, 5397), (4137, 4883)]