78085678

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{197}}^1\times {\mathrm{419}}^1$

素因数の和:672

約数の個数: 32

約数和(自身を含む): 131725440

約数和(自身を除く): 53639762

約数列:

[1, 2, 11, 22, 43, 86, 197, 394, 419, 473, 838, 946, 2167, 4334, 4609, 8471, 9218, 16942, 18017, 36034, 82543, 93181, 165086, 186362, 198187, 396374, 907973, 1815946, 3549349, 7098698, 39042839, 78085678]

約数ペア:

[(1, 78085678), (2, 39042839), (11, 7098698), (22, 3549349), (43, 1815946), (86, 907973), (197, 396374), (394, 198187), (419, 186362), (473, 165086), (838, 93181), (946, 82543), (2167, 36034), (4334, 18017), (4609, 16942), (8471, 9218)]