20213207

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{379}}^1\times {\mathrm{401}}^1$

素因数の和:806

約数の個数: 16

約数和(自身を含む): 24441600

約数和(自身を除く): 4228393

約数列:

[1, 7, 19, 133, 379, 401, 2653, 2807, 7201, 7619, 50407, 53333, 151979, 1063853, 2887601, 20213207]

約数ペア:

[(1, 20213207), (7, 2887601), (19, 1063853), (133, 151979), (379, 53333), (401, 50407), (2653, 7619), (2807, 7201)]