138590921

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{22171}}^1$

素因数の和:22244

約数の個数: 16

約数和(自身を含む): 170280960

約数和(自身を除く): 31690039

約数列:

[1, 7, 19, 47, 133, 329, 893, 6251, 22171, 155197, 421249, 1042037, 2948743, 7294259, 19798703, 138590921]

約数ペア:

[(1, 138590921), (7, 19798703), (19, 7294259), (47, 2948743), (133, 1042037), (329, 421249), (893, 155197), (6251, 22171)]