18439813

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{53}}^1\times {\mathrm{2161}}^1$

素因数の和:2244

約数の個数: 16

約数和(自身を含む): 22415616

約数和(自身を除く): 3975803

約数列:

[1, 7, 23, 53, 161, 371, 1219, 2161, 8533, 15127, 49703, 114533, 347921, 801731, 2634259, 18439813]

約数ペア:

[(1, 18439813), (7, 2634259), (23, 801731), (53, 347921), (161, 114533), (371, 49703), (1219, 15127), (2161, 8533)]