19984327

素因数分解:

${\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{137}}^1\times {\mathrm{149}}^1$

素因数の和:386

約数の個数: 16

約数和(自身を含む): 22356000

約数和(自身を除く): 2371673

約数列:

[1, 11, 89, 137, 149, 979, 1507, 1639, 12193, 13261, 20413, 134123, 145871, 224543, 1816757, 19984327]

約数ペア:

[(1, 19984327), (11, 1816757), (89, 224543), (137, 145871), (149, 134123), (979, 20413), (1507, 13261), (1639, 12193)]