2572840

素因数分解:

$2^3\times 5^1\times {\mathrm{131}}^1\times {\mathrm{491}}^1$

素因数の和:633

約数の個数: 32

約数和(自身を含む): 5844960

約数和(自身を除く): 3272120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 131, 262, 491, 524, 655, 982, 1048, 1310, 1964, 2455, 2620, 3928, 4910, 5240, 9820, 19640, 64321, 128642, 257284, 321605, 514568, 643210, 1286420, 2572840]

約数ペア:

[(1, 2572840), (2, 1286420), (4, 643210), (5, 514568), (8, 321605), (10, 257284), (20, 128642), (40, 64321), (131, 19640), (262, 9820), (491, 5240), (524, 4910), (655, 3928), (982, 2620), (1048, 2455), (1310, 1964)]