21870178

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{52321}}^1$

素因数の和:52353

約数の個数: 16

約数和(自身を含む): 37671840

約数和(自身を除く): 15801662

約数列:

[1, 2, 11, 19, 22, 38, 209, 418, 52321, 104642, 575531, 994099, 1151062, 1988198, 10935089, 21870178]

約数ペア:

[(1, 21870178), (2, 10935089), (11, 1988198), (19, 1151062), (22, 994099), (38, 575531), (209, 104642), (418, 52321)]