19973269

素因数分解:

${\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{109}}^1\times {\mathrm{257}}^1$

素因数の和:420

約数の個数: 16

約数和(自身を含む): 21795840

約数和(自身を除く): 1822571

約数列:

[1, 23, 31, 109, 257, 713, 2507, 3379, 5911, 7967, 28013, 77717, 183241, 644299, 868403, 19973269]

約数ペア:

[(1, 19973269), (23, 868403), (31, 644299), (109, 183241), (257, 77717), (713, 28013), (2507, 7967), (3379, 5911)]