20921241680

素因数分解:

$2^4\times 5^1\times {\mathrm{5419}}^1\times {\mathrm{48259}}^1$

素因数の和:53691

約数の個数: 40

約数和(自身を含む): 48651871200

約数和(自身を除く): 27730629520

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 5419, 10838, 21676, 27095, 43352, 48259, 54190, 86704, 96518, 108380, 193036, 216760, 241295, 386072, 433520, 482590, 772144, 965180, 1930360, 3860720, 261515521, 523031042, 1046062084, 1307577605, 2092124168, 2615155210, 4184248336, 5230310420, 10460620840, 20921241680]

約数ペア:

[(1, 20921241680), (2, 10460620840), (4, 5230310420), (5, 4184248336), (8, 2615155210), (10, 2092124168), (16, 1307577605), (20, 1046062084), (40, 523031042), (80, 261515521), (5419, 3860720), (10838, 1930360), (21676, 965180), (27095, 772144), (43352, 482590), (48259, 433520), (54190, 386072), (86704, 241295), (96518, 216760), (108380, 193036)]