205609840

素因数分解:

$2^4\times 5^1\times {\mathrm{389}}^1\times {\mathrm{6607}}^1$

素因数の和:7009

約数の個数: 40

約数和(自身を含む): 479344320

約数和(自身を除く): 273734480

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 389, 778, 1556, 1945, 3112, 3890, 6224, 6607, 7780, 13214, 15560, 26428, 31120, 33035, 52856, 66070, 105712, 132140, 264280, 528560, 2570123, 5140246, 10280492, 12850615, 20560984, 25701230, 41121968, 51402460, 102804920, 205609840]

約数ペア:

[(1, 205609840), (2, 102804920), (4, 51402460), (5, 41121968), (8, 25701230), (10, 20560984), (16, 12850615), (20, 10280492), (40, 5140246), (80, 2570123), (389, 528560), (778, 264280), (1556, 132140), (1945, 105712), (3112, 66070), (3890, 52856), (6224, 33035), (6607, 31120), (7780, 26428), (13214, 15560)]