19621553

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{67}}^1\times {\mathrm{107}}^1$

素因数の和:221

約数の個数: 32

約数和(自身を含む): 25380864

約数和(自身を除く): 5759311

約数列:

[1, 7, 17, 23, 67, 107, 119, 161, 391, 469, 749, 1139, 1541, 1819, 2461, 2737, 7169, 7973, 10787, 12733, 17227, 26197, 41837, 50183, 121873, 164887, 183379, 292859, 853111, 1154209, 2803079, 19621553]

約数ペア:

[(1, 19621553), (7, 2803079), (17, 1154209), (23, 853111), (67, 292859), (107, 183379), (119, 164887), (161, 121873), (391, 50183), (469, 41837), (749, 26197), (1139, 17227), (1541, 12733), (1819, 10787), (2461, 7973), (2737, 7169)]