51931355

素因数分解:

$5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{2081}}^1$

素因数の和:2147

約数の個数: 32

約数和(自身を含む): 76750848

約数和(自身を除く): 24819493

約数列:

[1, 5, 7, 23, 31, 35, 115, 155, 161, 217, 713, 805, 1085, 2081, 3565, 4991, 10405, 14567, 24955, 47863, 64511, 72835, 239315, 322555, 335041, 451577, 1483753, 1675205, 2257885, 7418765, 10386271, 51931355]

約数ペア:

[(1, 51931355), (5, 10386271), (7, 7418765), (23, 2257885), (31, 1675205), (35, 1483753), (115, 451577), (155, 335041), (161, 322555), (217, 239315), (713, 72835), (805, 64511), (1085, 47863), (2081, 24955), (3565, 14567), (4991, 10405)]