18917704

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{101}}^1\times {\mathrm{1801}}^1$

素因数の和:1921

約数の個数: 32

約数和(自身を含む): 38598840

約数和(自身を除く): 19681136

約数列:

[1, 2, 4, 8, 13, 26, 52, 101, 104, 202, 404, 808, 1313, 1801, 2626, 3602, 5252, 7204, 10504, 14408, 23413, 46826, 93652, 181901, 187304, 363802, 727604, 1455208, 2364713, 4729426, 9458852, 18917704]

約数ペア:

[(1, 18917704), (2, 9458852), (4, 4729426), (8, 2364713), (13, 1455208), (26, 727604), (52, 363802), (101, 187304), (104, 181901), (202, 93652), (404, 46826), (808, 23413), (1313, 14408), (1801, 10504), (2626, 7204), (3602, 5252)]