65394820

素因数分解:

$2^2\times 5^1\times {\mathrm{641}}^1\times {\mathrm{5101}}^1$

素因数の和:5751

約数の個数: 24

約数和(自身を含む): 137570328

約数和(自身を除く): 72175508

約数列:

[1, 2, 4, 5, 10, 20, 641, 1282, 2564, 3205, 5101, 6410, 10202, 12820, 20404, 25505, 51010, 102020, 3269741, 6539482, 13078964, 16348705, 32697410, 65394820]

約数ペア:

[(1, 65394820), (2, 32697410), (4, 16348705), (5, 13078964), (10, 6539482), (20, 3269741), (641, 102020), (1282, 51010), (2564, 25505), (3205, 20404), (5101, 12820), (6410, 10202)]