20172236

素因数分解:

$2^2\times 7^1\times {\mathrm{71}}^1\times {\mathrm{73}}^1\times {\mathrm{139}}^1$

素因数の和:294

約数の個数: 48

約数和(自身を含む): 41771520

約数和(自身を除く): 21599284

約数列:

[1, 2, 4, 7, 14, 28, 71, 73, 139, 142, 146, 278, 284, 292, 497, 511, 556, 973, 994, 1022, 1946, 1988, 2044, 3892, 5183, 9869, 10147, 10366, 19738, 20294, 20732, 36281, 39476, 40588, 69083, 71029, 72562, 138166, 142058, 145124, 276332, 284116, 720437, 1440874, 2881748, 5043059, 10086118, 20172236]

約数ペア:

[(1, 20172236), (2, 10086118), (4, 5043059), (7, 2881748), (14, 1440874), (28, 720437), (71, 284116), (73, 276332), (139, 145124), (142, 142058), (146, 138166), (278, 72562), (284, 71029), (292, 69083), (497, 40588), (511, 39476), (556, 36281), (973, 20732), (994, 20294), (1022, 19738), (1946, 10366), (1988, 10147), (2044, 9869), (3892, 5183)]