1261129840

素因数分解:

$2^4\times 5^1\times {\mathrm{257}}^1\times {\mathrm{61339}}^1$

素因数の和:61609

約数の個数: 40

約数和(自身を含む): 2943583920

約数和(自身を除く): 1682454080

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 257, 514, 1028, 1285, 2056, 2570, 4112, 5140, 10280, 20560, 61339, 122678, 245356, 306695, 490712, 613390, 981424, 1226780, 2453560, 4907120, 15764123, 31528246, 63056492, 78820615, 126112984, 157641230, 252225968, 315282460, 630564920, 1261129840]

約数ペア:

[(1, 1261129840), (2, 630564920), (4, 315282460), (5, 252225968), (8, 157641230), (10, 126112984), (16, 78820615), (20, 63056492), (40, 31528246), (80, 15764123), (257, 4907120), (514, 2453560), (1028, 1226780), (1285, 981424), (2056, 613390), (2570, 490712), (4112, 306695), (5140, 245356), (10280, 122678), (20560, 61339)]