19780342

素因数分解:

$2^1\times {\mathrm{53}}^1\times {\mathrm{191}}^1\times {\mathrm{977}}^1$

素因数の和:1223

約数の個数: 16

約数和(自身を含む): 30419712

約数和(自身を除く): 10639370

約数列:

[1, 2, 53, 106, 191, 382, 977, 1954, 10123, 20246, 51781, 103562, 186607, 373214, 9890171, 19780342]

約数ペア:

[(1, 19780342), (2, 9890171), (53, 373214), (106, 186607), (191, 103562), (382, 51781), (977, 20246), (1954, 10123)]