19987198

素因数分解:

$2^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{18541}}^1$

素因数の和:18568

約数の個数: 24

約数和(自身を含む): 38048184

約数和(自身を除く): 18060986

約数列:

[1, 2, 7, 11, 14, 22, 49, 77, 98, 154, 539, 1078, 18541, 37082, 129787, 203951, 259574, 407902, 908509, 1427657, 1817018, 2855314, 9993599, 19987198]

約数ペア:

[(1, 19987198), (2, 9993599), (7, 2855314), (11, 1817018), (14, 1427657), (22, 908509), (49, 407902), (77, 259574), (98, 203951), (154, 129787), (539, 37082), (1078, 18541)]