128640848

素因数分解:

$2^4\times 7^1\times {\mathrm{821}}^1\times {\mathrm{1399}}^1$

素因数の和:2235

約数の個数: 40

約数和(自身を含む): 285398400

約数和(自身を除く): 156757552

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 821, 1399, 1642, 2798, 3284, 5596, 5747, 6568, 9793, 11192, 11494, 13136, 19586, 22384, 22988, 39172, 45976, 78344, 91952, 156688, 1148579, 2297158, 4594316, 8040053, 9188632, 16080106, 18377264, 32160212, 64320424, 128640848]

約数ペア:

[(1, 128640848), (2, 64320424), (4, 32160212), (7, 18377264), (8, 16080106), (14, 9188632), (16, 8040053), (28, 4594316), (56, 2297158), (112, 1148579), (821, 156688), (1399, 91952), (1642, 78344), (2798, 45976), (3284, 39172), (5596, 22988), (5747, 22384), (6568, 19586), (9793, 13136), (11192, 11494)]