28657890

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{16759}}^1$

素因数の和:16791

約数の個数: 48

約数和(自身を含む): 78436800

約数和(自身を除く): 49778910

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 19, 30, 38, 45, 57, 90, 95, 114, 171, 190, 285, 342, 570, 855, 1710, 16759, 33518, 50277, 83795, 100554, 150831, 167590, 251385, 301662, 318421, 502770, 636842, 754155, 955263, 1508310, 1592105, 1910526, 2865789, 3184210, 4776315, 5731578, 9552630, 14328945, 28657890]

約数ペア:

[(1, 28657890), (2, 14328945), (3, 9552630), (5, 5731578), (6, 4776315), (9, 3184210), (10, 2865789), (15, 1910526), (18, 1592105), (19, 1508310), (30, 955263), (38, 754155), (45, 636842), (57, 502770), (90, 318421), (95, 301662), (114, 251385), (171, 167590), (190, 150831), (285, 100554), (342, 83795), (570, 50277), (855, 33518), (1710, 16759)]