20778820168

素因数分解:

$2^3\times {\mathrm{43}}^1\times {\mathrm{3919}}^1\times {\mathrm{15413}}^1$

素因数の和:19381

約数の個数: 32

約数和(自身を含む): 39879100800

約数和(自身を除く): 19100280632

約数列:

[1, 2, 4, 8, 43, 86, 172, 344, 3919, 7838, 15413, 15676, 30826, 31352, 61652, 123304, 168517, 337034, 662759, 674068, 1325518, 1348136, 2651036, 5302072, 60403547, 120807094, 241614188, 483228376, 2597352521, 5194705042, 10389410084, 20778820168]

約数ペア:

[(1, 20778820168), (2, 10389410084), (4, 5194705042), (8, 2597352521), (43, 483228376), (86, 241614188), (172, 120807094), (344, 60403547), (3919, 5302072), (7838, 2651036), (15413, 1348136), (15676, 1325518), (30826, 674068), (31352, 662759), (61652, 337034), (123304, 168517)]