19909533

素因数分解:

$3^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{257}}^1$

素因数の和:322

約数の個数: 48

約数和(自身を含む): 33882624

約数和(自身を除く): 13973091

約数列:

[1, 3, 7, 17, 21, 31, 49, 51, 93, 119, 147, 217, 257, 357, 527, 651, 771, 833, 1519, 1581, 1799, 2499, 3689, 4369, 4557, 5397, 7967, 11067, 12593, 13107, 23901, 25823, 30583, 37779, 55769, 77469, 91749, 135439, 167307, 214081, 390383, 406317, 642243, 948073, 1171149, 2844219, 6636511, 19909533]

約数ペア:

[(1, 19909533), (3, 6636511), (7, 2844219), (17, 1171149), (21, 948073), (31, 642243), (49, 406317), (51, 390383), (93, 214081), (119, 167307), (147, 135439), (217, 91749), (257, 77469), (357, 55769), (527, 37779), (651, 30583), (771, 25823), (833, 23901), (1519, 13107), (1581, 12593), (1799, 11067), (2499, 7967), (3689, 5397), (4369, 4557)]