19960208

素因数分解:

$2^4\times {\mathrm{89}}^1\times {\mathrm{107}}^1\times {\mathrm{131}}^1$

素因数の和:335

約数の個数: 40

約数和(自身を含む): 39774240

約数和(自身を除く): 19814032

約数列:

[1, 2, 4, 8, 16, 89, 107, 131, 178, 214, 262, 356, 428, 524, 712, 856, 1048, 1424, 1712, 2096, 9523, 11659, 14017, 19046, 23318, 28034, 38092, 46636, 56068, 76184, 93272, 112136, 152368, 186544, 224272, 1247513, 2495026, 4990052, 9980104, 19960208]

約数ペア:

[(1, 19960208), (2, 9980104), (4, 4990052), (8, 2495026), (16, 1247513), (89, 224272), (107, 186544), (131, 152368), (178, 112136), (214, 93272), (262, 76184), (356, 56068), (428, 46636), (524, 38092), (712, 28034), (856, 23318), (1048, 19046), (1424, 14017), (1712, 11659), (2096, 9523)]