257788498

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{191}}^1\times {\mathrm{1979}}^1$

素因数の和:2214

約数の個数: 32

約数和(自身を含む): 437944320

約数和(自身を除く): 180155822

約数列:

[1, 2, 11, 22, 31, 62, 191, 341, 382, 682, 1979, 2101, 3958, 4202, 5921, 11842, 21769, 43538, 61349, 65131, 122698, 130262, 377989, 674839, 755978, 1349678, 4157879, 8315758, 11717659, 23435318, 128894249, 257788498]

約数ペア:

[(1, 257788498), (2, 128894249), (11, 23435318), (22, 11717659), (31, 8315758), (62, 4157879), (191, 1349678), (341, 755978), (382, 674839), (682, 377989), (1979, 130262), (2101, 122698), (3958, 65131), (4202, 61349), (5921, 43538), (11842, 21769)]