21479380

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{82613}}^1$

素因数の和:82635

約数の個数: 24

約数和(自身を含む): 48577032

約数和(自身を除く): 27097652

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 82613, 165226, 330452, 413065, 826130, 1073969, 1652260, 2147938, 4295876, 5369845, 10739690, 21479380]

約数ペア:

[(1, 21479380), (2, 10739690), (4, 5369845), (5, 4295876), (10, 2147938), (13, 1652260), (20, 1073969), (26, 826130), (52, 413065), (65, 330452), (130, 165226), (260, 82613)]