265604840

素因数分解:

$2^3\times 5^1\times {\mathrm{6640121}}^1$

素因数の和:6640132

約数の個数: 16

約数和(自身を含む): 597610980

約数和(自身を除く): 332006140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 6640121, 13280242, 26560484, 33200605, 53120968, 66401210, 132802420, 265604840]

約数ペア:

[(1, 265604840), (2, 132802420), (4, 66401210), (5, 53120968), (8, 33200605), (10, 26560484), (20, 13280242), (40, 6640121)]