21074079

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{17431}}^1$

素因数の和:17478

約数の個数: 16

約数和(自身を含む): 31238144

約数和(自身を除く): 10164065

約数列:

[1, 3, 13, 31, 39, 93, 403, 1209, 17431, 52293, 226603, 540361, 679809, 1621083, 7024693, 21074079]

約数ペア:

[(1, 21074079), (3, 7024693), (13, 1621083), (31, 679809), (39, 540361), (93, 226603), (403, 52293), (1209, 17431)]