28939540

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{421}}^1\times {\mathrm{491}}^1$

素因数の和:928

約数の個数: 48

約数和(自身を含む): 69761664

約数和(自身を除く): 40822124

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 421, 491, 842, 982, 1684, 1964, 2105, 2455, 2947, 3437, 4210, 4910, 5894, 6874, 8420, 9820, 11788, 13748, 14735, 17185, 29470, 34370, 58940, 68740, 206711, 413422, 826844, 1033555, 1446977, 2067110, 2893954, 4134220, 5787908, 7234885, 14469770, 28939540]

約数ペア:

[(1, 28939540), (2, 14469770), (4, 7234885), (5, 5787908), (7, 4134220), (10, 2893954), (14, 2067110), (20, 1446977), (28, 1033555), (35, 826844), (70, 413422), (140, 206711), (421, 68740), (491, 58940), (842, 34370), (982, 29470), (1684, 17185), (1964, 14735), (2105, 13748), (2455, 11788), (2947, 9820), (3437, 8420), (4210, 6874), (4910, 5894)]