201220390

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{40487}}^1$

素因数の和:40572

約数の個数: 32

約数和(自身を含む): 419779584

約数和(自身を除く): 218559194

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 71, 142, 355, 497, 710, 994, 2485, 4970, 40487, 80974, 202435, 283409, 404870, 566818, 1417045, 2834090, 2874577, 5749154, 14372885, 20122039, 28745770, 40244078, 100610195, 201220390]

約数ペア:

[(1, 201220390), (2, 100610195), (5, 40244078), (7, 28745770), (10, 20122039), (14, 14372885), (35, 5749154), (70, 2874577), (71, 2834090), (142, 1417045), (355, 566818), (497, 404870), (710, 283409), (994, 202435), (2485, 80974), (4970, 40487)]