80018890

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{127}}^1\times {\mathrm{9001}}^1$

素因数の和:9142

約数の個数: 32

約数和(自身を含む): 165924864

約数和(自身を除く): 85905974

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 127, 254, 635, 889, 1270, 1778, 4445, 8890, 9001, 18002, 45005, 63007, 90010, 126014, 315035, 630070, 1143127, 2286254, 5715635, 8001889, 11431270, 16003778, 40009445, 80018890]

約数ペア:

[(1, 80018890), (2, 40009445), (5, 16003778), (7, 11431270), (10, 8001889), (14, 5715635), (35, 2286254), (70, 1143127), (127, 630070), (254, 315035), (635, 126014), (889, 90010), (1270, 63007), (1778, 45005), (4445, 18002), (8890, 9001)]