19699840

素因数分解:

$2^7\times 5^1\times {\mathrm{30781}}^1$

素因数の和:30800

約数の個数: 32

約数和(自身を含む): 47096460

約数和(自身を除く): 27396620

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 30781, 61562, 123124, 153905, 246248, 307810, 492496, 615620, 984992, 1231240, 1969984, 2462480, 3939968, 4924960, 9849920, 19699840]

約数ペア:

[(1, 19699840), (2, 9849920), (4, 4924960), (5, 3939968), (8, 2462480), (10, 1969984), (16, 1231240), (20, 984992), (32, 615620), (40, 492496), (64, 307810), (80, 246248), (128, 153905), (160, 123124), (320, 61562), (640, 30781)]