19980455551

素因数分解:

$7^3\times {\mathrm{43}}^1\times {\mathrm{59}}^1\times {\mathrm{22961}}^1$

素因数の和:23084

約数の個数: 32

約数和(自身を含む): 24247872000

約数和(自身を除く): 4267416449

約数列:

[1, 7, 43, 49, 59, 301, 343, 413, 2107, 2537, 2891, 14749, 17759, 20237, 22961, 124313, 160727, 870191, 987323, 1125089, 1354699, 6911261, 7875623, 9482893, 48378827, 58252057, 66380251, 338651789, 407764399, 464661757, 2854350793, 19980455551]

約数ペア:

[(1, 19980455551), (7, 2854350793), (43, 464661757), (49, 407764399), (59, 338651789), (301, 66380251), (343, 58252057), (413, 48378827), (2107, 9482893), (2537, 7875623), (2891, 6911261), (14749, 1354699), (17759, 1125089), (20237, 987323), (22961, 870191), (124313, 160727)]