18993578

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{73}}^1\times {\mathrm{167}}^1$

素因数の和:302

約数の個数: 32

約数和(自身を含む): 31328640

約数和(自身を除く): 12335062

約数列:

[1, 2, 19, 38, 41, 73, 82, 146, 167, 334, 779, 1387, 1558, 2774, 2993, 3173, 5986, 6346, 6847, 12191, 13694, 24382, 56867, 113734, 130093, 231629, 260186, 463258, 499831, 999662, 9496789, 18993578]

約数ペア:

[(1, 18993578), (2, 9496789), (19, 999662), (38, 499831), (41, 463258), (73, 260186), (82, 231629), (146, 130093), (167, 113734), (334, 56867), (779, 24382), (1387, 13694), (1558, 12191), (2774, 6847), (2993, 6346), (3173, 5986)]