2021025805

素因数分解:

$5^1\times {\mathrm{29}}^1\times {\mathrm{73}}^1\times {\mathrm{431}}^1\times {\mathrm{443}}^1$

素因数の和:981

約数の個数: 32

約数和(自身を含む): 2554882560

約数和(自身を除く): 533856755

約数列:

[1, 5, 29, 73, 145, 365, 431, 443, 2117, 2155, 2215, 10585, 12499, 12847, 31463, 32339, 62495, 64235, 157315, 161695, 190933, 912427, 937831, 954665, 4562135, 4689155, 5537057, 13938109, 27685285, 69690545, 404205161, 2021025805]

約数ペア:

[(1, 2021025805), (5, 404205161), (29, 69690545), (73, 27685285), (145, 13938109), (365, 5537057), (431, 4689155), (443, 4562135), (2117, 954665), (2155, 937831), (2215, 912427), (10585, 190933), (12499, 161695), (12847, 157315), (31463, 64235), (32339, 62495)]