20393919

素因数分解:

$3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{673}}^1$

素因数の和:736

約数の個数: 48

約数和(自身を含む): 37291072

約数和(自身を除く): 16897153

約数列:

[1, 3, 7, 9, 13, 21, 37, 39, 63, 91, 111, 117, 259, 273, 333, 481, 673, 777, 819, 1443, 2019, 2331, 3367, 4329, 4711, 6057, 8749, 10101, 14133, 24901, 26247, 30303, 42399, 61243, 74703, 78741, 174307, 183729, 224109, 323713, 522921, 551187, 971139, 1568763, 2265991, 2913417, 6797973, 20393919]

約数ペア:

[(1, 20393919), (3, 6797973), (7, 2913417), (9, 2265991), (13, 1568763), (21, 971139), (37, 551187), (39, 522921), (63, 323713), (91, 224109), (111, 183729), (117, 174307), (259, 78741), (273, 74703), (333, 61243), (481, 42399), (673, 30303), (777, 26247), (819, 24901), (1443, 14133), (2019, 10101), (2331, 8749), (3367, 6057), (4329, 4711)]