212944921

素因数分解:

$7^1\times {\mathrm{31}}^1\times {\mathrm{47}}^1\times {\mathrm{20879}}^1$

素因数の和:20964

約数の個数: 16

約数和(自身を含む): 256573440

約数和(自身を除く): 43628519

約数列:

[1, 7, 31, 47, 217, 329, 1457, 10199, 20879, 146153, 647249, 981313, 4530743, 6869191, 30420703, 212944921]

約数ペア:

[(1, 212944921), (7, 30420703), (31, 6869191), (47, 4530743), (217, 981313), (329, 647249), (1457, 146153), (10199, 20879)]