20006665

素因数分解:

$5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{857}}^1$

素因数の和:921

約数の個数: 32

約数和(自身を含む): 29652480

約数和(自身を除く): 9645815

約数列:

[1, 5, 7, 23, 29, 35, 115, 145, 161, 203, 667, 805, 857, 1015, 3335, 4285, 4669, 5999, 19711, 23345, 24853, 29995, 98555, 124265, 137977, 173971, 571619, 689885, 869855, 2858095, 4001333, 20006665]

約数ペア:

[(1, 20006665), (5, 4001333), (7, 2858095), (23, 869855), (29, 689885), (35, 571619), (115, 173971), (145, 137977), (161, 124265), (203, 98555), (667, 29995), (805, 24853), (857, 23345), (1015, 19711), (3335, 5999), (4285, 4669)]