2554580

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{257}}^1$

素因数の和:344

約数の個数: 48

約数和(自身を含む): 6241536

約数和(自身を除く): 3686956

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 71, 140, 142, 257, 284, 355, 497, 514, 710, 994, 1028, 1285, 1420, 1799, 1988, 2485, 2570, 3598, 4970, 5140, 7196, 8995, 9940, 17990, 18247, 35980, 36494, 72988, 91235, 127729, 182470, 255458, 364940, 510916, 638645, 1277290, 2554580]

約数ペア:

[(1, 2554580), (2, 1277290), (4, 638645), (5, 510916), (7, 364940), (10, 255458), (14, 182470), (20, 127729), (28, 91235), (35, 72988), (70, 36494), (71, 35980), (140, 18247), (142, 17990), (257, 9940), (284, 8995), (355, 7196), (497, 5140), (514, 4970), (710, 3598), (994, 2570), (1028, 2485), (1285, 1988), (1420, 1799)]