19870735

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{131}}^1\times {\mathrm{1319}}^1$

素因数の和:1478

約数の個数: 16

約数和(自身を含む): 25090560

約数和(自身を除く): 5219825

約数列:

[1, 5, 23, 115, 131, 655, 1319, 3013, 6595, 15065, 30337, 151685, 172789, 863945, 3974147, 19870735]

約数ペア:

[(1, 19870735), (5, 3974147), (23, 863945), (115, 172789), (131, 151685), (655, 30337), (1319, 15065), (3013, 6595)]