18742671

素因数分解:

$3^4\times {\mathrm{29}}^1\times {\mathrm{79}}^1\times {\mathrm{101}}^1$

素因数の和:221

約数の個数: 40

約数和(自身を含む): 29620800

約数和(自身を除く): 10878129

約数列:

[1, 3, 9, 27, 29, 79, 81, 87, 101, 237, 261, 303, 711, 783, 909, 2133, 2291, 2349, 2727, 2929, 6399, 6873, 7979, 8181, 8787, 20619, 23937, 26361, 61857, 71811, 79083, 185571, 215433, 231391, 237249, 646299, 694173, 2082519, 6247557, 18742671]

約数ペア:

[(1, 18742671), (3, 6247557), (9, 2082519), (27, 694173), (29, 646299), (79, 237249), (81, 231391), (87, 215433), (101, 185571), (237, 79083), (261, 71811), (303, 61857), (711, 26361), (783, 23937), (909, 20619), (2133, 8787), (2291, 8181), (2349, 7979), (2727, 6873), (2929, 6399)]