21280304

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{70001}}^1$

素因数の和:70028

約数の個数: 20

約数和(自身を含む): 43401240

約数和(自身を除く): 22120936

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 152, 304, 70001, 140002, 280004, 560008, 1120016, 1330019, 2660038, 5320076, 10640152, 21280304]

約数ペア:

[(1, 21280304), (2, 10640152), (4, 5320076), (8, 2660038), (16, 1330019), (19, 1120016), (38, 560008), (76, 280004), (152, 140002), (304, 70001)]