206563240

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{397237}}^1$

素因数の和:397261

約数の個数: 32

約数和(自身を含む): 500519880

約数和(自身を除く): 293956640

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 397237, 794474, 1588948, 1986185, 3177896, 3972370, 5164081, 7944740, 10328162, 15889480, 20656324, 25820405, 41312648, 51640810, 103281620, 206563240]

約数ペア:

[(1, 206563240), (2, 103281620), (4, 51640810), (5, 41312648), (8, 25820405), (10, 20656324), (13, 15889480), (20, 10328162), (26, 7944740), (40, 5164081), (52, 3972370), (65, 3177896), (104, 1986185), (130, 1588948), (260, 794474), (520, 397237)]