256979680

素因数分解:

$2^5\times 5^1\times {\mathrm{1606123}}^1$

素因数の和:1606138

約数の個数: 24

約数和(自身を含む): 607114872

約数和(自身を除く): 350135192

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 1606123, 3212246, 6424492, 8030615, 12848984, 16061230, 25697968, 32122460, 51395936, 64244920, 128489840, 256979680]

約数ペア:

[(1, 256979680), (2, 128489840), (4, 64244920), (5, 51395936), (8, 32122460), (10, 25697968), (16, 16061230), (20, 12848984), (32, 8030615), (40, 6424492), (80, 3212246), (160, 1606123)]