21751504

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{71551}}^1$

素因数の和:71578

約数の個数: 20

約数和(自身を含む): 44362240

約数和(自身を除く): 22610736

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 152, 304, 71551, 143102, 286204, 572408, 1144816, 1359469, 2718938, 5437876, 10875752, 21751504]

約数ペア:

[(1, 21751504), (2, 10875752), (4, 5437876), (8, 2718938), (16, 1359469), (19, 1144816), (38, 572408), (76, 286204), (152, 143102), (304, 71551)]