18989902

素因数分解:

$2^1\times {\mathrm{83}}^1\times {\mathrm{139}}^1\times {\mathrm{823}}^1$

素因数の和:1047

約数の個数: 16

約数和(自身を含む): 29070720

約数和(自身を除く): 10080818

約数列:

[1, 2, 83, 139, 166, 278, 823, 1646, 11537, 23074, 68309, 114397, 136618, 228794, 9494951, 18989902]

約数ペア:

[(1, 18989902), (2, 9494951), (83, 228794), (139, 136618), (166, 114397), (278, 68309), (823, 23074), (1646, 11537)]