21371245441

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{59}}^1\times {\mathrm{311}}^1\times {\mathrm{12799}}^1$

素因数の和:13189

約数の個数: 32

約数和(自身を含む): 26836992000

約数和(自身を除く): 5465746559

約数列:

[1, 7, 13, 59, 91, 311, 413, 767, 2177, 4043, 5369, 12799, 18349, 28301, 89593, 128443, 166387, 238537, 755141, 1164709, 1669759, 3980489, 5285987, 9816833, 27863423, 51746357, 68717831, 234848851, 362224499, 1643941957, 3053035063, 21371245441]

約数ペア:

[(1, 21371245441), (7, 3053035063), (13, 1643941957), (59, 362224499), (91, 234848851), (311, 68717831), (413, 51746357), (767, 27863423), (2177, 9816833), (4043, 5285987), (5369, 3980489), (12799, 1669759), (18349, 1164709), (28301, 755141), (89593, 238537), (128443, 166387)]