28820840

素因数分解:

$2^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{31327}}^1$

素因数の和:31361

約数の個数: 32

約数和(自身を含む): 67668480

約数和(自身を除く): 38847640

約数列:

[1, 2, 4, 5, 8, 10, 20, 23, 40, 46, 92, 115, 184, 230, 460, 920, 31327, 62654, 125308, 156635, 250616, 313270, 626540, 720521, 1253080, 1441042, 2882084, 3602605, 5764168, 7205210, 14410420, 28820840]

約数ペア:

[(1, 28820840), (2, 14410420), (4, 7205210), (5, 5764168), (8, 3602605), (10, 2882084), (20, 1441042), (23, 1253080), (40, 720521), (46, 626540), (92, 313270), (115, 250616), (184, 156635), (230, 125308), (460, 62654), (920, 31327)]