18774015

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{2239}}^1$

素因数の和:2303

約数の個数: 32

約数和(自身を含む): 33116160

約数和(自身を除く): 14342145

約数列:

[1, 3, 5, 13, 15, 39, 43, 65, 129, 195, 215, 559, 645, 1677, 2239, 2795, 6717, 8385, 11195, 29107, 33585, 87321, 96277, 145535, 288831, 436605, 481385, 1251601, 1444155, 3754803, 6258005, 18774015]

約数ペア:

[(1, 18774015), (3, 6258005), (5, 3754803), (13, 1444155), (15, 1251601), (39, 481385), (43, 436605), (65, 288831), (129, 145535), (195, 96277), (215, 87321), (559, 33585), (645, 29107), (1677, 11195), (2239, 8385), (2795, 6717)]