1619860

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{199}}^1$

素因数の和:256

約数の個数: 48

約数和(自身を含む): 3830400

約数和(自身を除く): 2210540

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 37, 44, 55, 74, 110, 148, 185, 199, 220, 370, 398, 407, 740, 796, 814, 995, 1628, 1990, 2035, 2189, 3980, 4070, 4378, 7363, 8140, 8756, 10945, 14726, 21890, 29452, 36815, 43780, 73630, 80993, 147260, 161986, 323972, 404965, 809930, 1619860]

約数ペア:

[(1, 1619860), (2, 809930), (4, 404965), (5, 323972), (10, 161986), (11, 147260), (20, 80993), (22, 73630), (37, 43780), (44, 36815), (55, 29452), (74, 21890), (110, 14726), (148, 10945), (185, 8756), (199, 8140), (220, 7363), (370, 4378), (398, 4070), (407, 3980), (740, 2189), (796, 2035), (814, 1990), (995, 1628)]