21070696

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{67}}^1\times {\mathrm{2069}}^1$

素因数の和:2161

約数の個数: 32

約数和(自身を含む): 42228000

約数和(自身を除く): 21157304

約数列:

[1, 2, 4, 8, 19, 38, 67, 76, 134, 152, 268, 536, 1273, 2069, 2546, 4138, 5092, 8276, 10184, 16552, 39311, 78622, 138623, 157244, 277246, 314488, 554492, 1108984, 2633837, 5267674, 10535348, 21070696]

約数ペア:

[(1, 21070696), (2, 10535348), (4, 5267674), (8, 2633837), (19, 1108984), (38, 554492), (67, 314488), (76, 277246), (134, 157244), (152, 138623), (268, 78622), (536, 39311), (1273, 16552), (2069, 10184), (2546, 8276), (4138, 5092)]