19981117

素因数分解:

${\mathrm{13}}^1\times {\mathrm{59}}^1\times {\mathrm{109}}^1\times {\mathrm{239}}^1$

素因数の和:420

約数の個数: 16

約数和(自身を含む): 22176000

約数和(自身を除く): 2194883

約数列:

[1, 13, 59, 109, 239, 767, 1417, 3107, 6431, 14101, 26051, 83603, 183313, 338663, 1537009, 19981117]

約数ペア:

[(1, 19981117), (13, 1537009), (59, 338663), (109, 183313), (239, 83603), (767, 26051), (1417, 14101), (3107, 6431)]