21988276

素因数分解:

$2^2\times {\mathrm{17}}^2\times {\mathrm{23}}^1\times {\mathrm{827}}^1$

素因数の和:888

約数の個数: 36

約数和(自身を含む): 42704928

約数和(自身を除く): 20716652

約数列:

[1, 2, 4, 17, 23, 34, 46, 68, 92, 289, 391, 578, 782, 827, 1156, 1564, 1654, 3308, 6647, 13294, 14059, 19021, 26588, 28118, 38042, 56236, 76084, 239003, 323357, 478006, 646714, 956012, 1293428, 5497069, 10994138, 21988276]

約数ペア:

[(1, 21988276), (2, 10994138), (4, 5497069), (17, 1293428), (23, 956012), (34, 646714), (46, 478006), (68, 323357), (92, 239003), (289, 76084), (391, 56236), (578, 38042), (782, 28118), (827, 26588), (1156, 19021), (1564, 14059), (1654, 13294), (3308, 6647)]