20974769405

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{43}}^2\times {\mathrm{317}}^1\times {\mathrm{421}}^1$

素因数の和:846

約数の個数: 48

約数和(自身を含む): 27435567024

約数和(自身を除く): 6460797619

約数列:

[1, 5, 17, 43, 85, 215, 317, 421, 731, 1585, 1849, 2105, 3655, 5389, 7157, 9245, 13631, 18103, 26945, 31433, 35785, 68155, 90515, 133457, 157165, 231727, 307751, 586133, 667285, 778429, 1158635, 1538755, 2268769, 2930665, 3892145, 5738651, 9964261, 11343845, 13233293, 28693255, 49821305, 66166465, 97557067, 246761993, 487785335, 1233809965, 4194953881, 20974769405]

約数ペア:

[(1, 20974769405), (5, 4194953881), (17, 1233809965), (43, 487785335), (85, 246761993), (215, 97557067), (317, 66166465), (421, 49821305), (731, 28693255), (1585, 13233293), (1849, 11343845), (2105, 9964261), (3655, 5738651), (5389, 3892145), (7157, 2930665), (9245, 2268769), (13631, 1538755), (18103, 1158635), (26945, 778429), (31433, 667285), (35785, 586133), (68155, 307751), (90515, 231727), (133457, 157165)]