21790154

素因数分解:

$2^1\times {\mathrm{23}}^1\times {\mathrm{641}}^1\times {\mathrm{739}}^1$

素因数の和:1405

約数の個数: 16

約数和(自身を含む): 34205760

約数和(自身を除く): 12415606

約数列:

[1, 2, 23, 46, 641, 739, 1282, 1478, 14743, 16997, 29486, 33994, 473699, 947398, 10895077, 21790154]

約数ペア:

[(1, 21790154), (2, 10895077), (23, 947398), (46, 473699), (641, 33994), (739, 29486), (1282, 16997), (1478, 14743)]