20511190

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{4127}}^1$

素因数の和:4212

約数の個数: 32

約数和(自身を含む): 42799104

約数和(自身を除く): 22287914

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 71, 142, 355, 497, 710, 994, 2485, 4127, 4970, 8254, 20635, 28889, 41270, 57778, 144445, 288890, 293017, 586034, 1465085, 2051119, 2930170, 4102238, 10255595, 20511190]

約数ペア:

[(1, 20511190), (2, 10255595), (5, 4102238), (7, 2930170), (10, 2051119), (14, 1465085), (35, 586034), (70, 293017), (71, 288890), (142, 144445), (355, 57778), (497, 41270), (710, 28889), (994, 20635), (2485, 8254), (4127, 4970)]