21901072

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{72043}}^1$

素因数の和:72070

約数の個数: 20

約数和(自身を含む): 44667280

約数和(自身を除く): 22766208

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 152, 304, 72043, 144086, 288172, 576344, 1152688, 1368817, 2737634, 5475268, 10950536, 21901072]

約数ペア:

[(1, 21901072), (2, 10950536), (4, 5475268), (8, 2737634), (16, 1368817), (19, 1152688), (38, 576344), (76, 288172), (152, 144086), (304, 72043)]