19678477

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{107}}^1$

素因数の和:217

約数の個数: 32

約数和(自身を含む): 25546752

約数和(自身を除く): 5868275

約数列:

[1, 7, 13, 43, 47, 91, 107, 301, 329, 559, 611, 749, 1391, 2021, 3913, 4277, 4601, 5029, 9737, 14147, 26273, 32207, 35203, 59813, 65377, 183911, 216247, 418691, 457639, 1513729, 2811211, 19678477]

約数ペア:

[(1, 19678477), (7, 2811211), (13, 1513729), (43, 457639), (47, 418691), (91, 216247), (107, 183911), (301, 65377), (329, 59813), (559, 35203), (611, 32207), (749, 26273), (1391, 14147), (2021, 9737), (3913, 5029), (4277, 4601)]