21001878

素因数分解:

$2^1\times 3^2\times {\mathrm{19}}^1\times {\mathrm{61409}}^1$

素因数の和:61436

約数の個数: 24

約数和(自身を含む): 47899800

約数和(自身を除く): 26897922

約数列:

[1, 2, 3, 6, 9, 18, 19, 38, 57, 114, 171, 342, 61409, 122818, 184227, 368454, 552681, 1105362, 1166771, 2333542, 3500313, 7000626, 10500939, 21001878]

約数ペア:

[(1, 21001878), (2, 10500939), (3, 7000626), (6, 3500313), (9, 2333542), (18, 1166771), (19, 1105362), (38, 552681), (57, 368454), (114, 184227), (171, 122818), (342, 61409)]