18119985

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{2161}}^1$

素因数の和:2225

約数の個数: 32

約数和(自身を含む): 31963008

約数和(自身を除く): 13843023

約数列:

[1, 3, 5, 13, 15, 39, 43, 65, 129, 195, 215, 559, 645, 1677, 2161, 2795, 6483, 8385, 10805, 28093, 32415, 84279, 92923, 140465, 278769, 421395, 464615, 1207999, 1393845, 3623997, 6039995, 18119985]

約数ペア:

[(1, 18119985), (3, 6039995), (5, 3623997), (13, 1393845), (15, 1207999), (39, 464615), (43, 421395), (65, 278769), (129, 140465), (195, 92923), (215, 84279), (559, 32415), (645, 28093), (1677, 10805), (2161, 8385), (2795, 6483)]