21556730

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{2099}}^1$

素因数の和:2198

約数の個数: 32

約数和(自身を含む): 42336000

約数和(自身を除く): 20779270

約数列:

[1, 2, 5, 10, 13, 26, 65, 79, 130, 158, 395, 790, 1027, 2054, 2099, 4198, 5135, 10270, 10495, 20990, 27287, 54574, 136435, 165821, 272870, 331642, 829105, 1658210, 2155673, 4311346, 10778365, 21556730]

約数ペア:

[(1, 21556730), (2, 10778365), (5, 4311346), (10, 2155673), (13, 1658210), (26, 829105), (65, 331642), (79, 272870), (130, 165821), (158, 136435), (395, 54574), (790, 27287), (1027, 20990), (2054, 10495), (2099, 10270), (4198, 5135)]