210917720

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{405611}}^1$

素因数の和:405635

約数の個数: 32

約数和(自身を含む): 511071120

約数和(自身を除く): 300153400

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 405611, 811222, 1622444, 2028055, 3244888, 4056110, 5272943, 8112220, 10545886, 16224440, 21091772, 26364715, 42183544, 52729430, 105458860, 210917720]

約数ペア:

[(1, 210917720), (2, 105458860), (4, 52729430), (5, 42183544), (8, 26364715), (10, 21091772), (13, 16224440), (20, 10545886), (26, 8112220), (40, 5272943), (52, 4056110), (65, 3244888), (104, 2028055), (130, 1622444), (260, 811222), (520, 405611)]