19827815

素因数分解:

$5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{79}}^1\times {\mathrm{101}}^1$

素因数の和:263

約数の個数: 32

約数和(自身を含む): 28200960

約数和(自身を除く): 8373145

約数列:

[1, 5, 7, 35, 71, 79, 101, 355, 395, 497, 505, 553, 707, 2485, 2765, 3535, 5609, 7171, 7979, 28045, 35855, 39263, 39895, 50197, 55853, 196315, 250985, 279265, 566509, 2832545, 3965563, 19827815]

約数ペア:

[(1, 19827815), (5, 3965563), (7, 2832545), (35, 566509), (71, 279265), (79, 250985), (101, 196315), (355, 55853), (395, 50197), (497, 39895), (505, 39263), (553, 35855), (707, 28045), (2485, 7979), (2765, 7171), (3535, 5609)]