20930320

素因数分解:

$2^4\times 5^1\times {\mathrm{61}}^1\times {\mathrm{4289}}^1$

素因数の和:4363

約数の個数: 40

約数和(自身を含む): 49472280

約数和(自身を除く): 28541960

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 61, 80, 122, 244, 305, 488, 610, 976, 1220, 2440, 4289, 4880, 8578, 17156, 21445, 34312, 42890, 68624, 85780, 171560, 261629, 343120, 523258, 1046516, 1308145, 2093032, 2616290, 4186064, 5232580, 10465160, 20930320]

約数ペア:

[(1, 20930320), (2, 10465160), (4, 5232580), (5, 4186064), (8, 2616290), (10, 2093032), (16, 1308145), (20, 1046516), (40, 523258), (61, 343120), (80, 261629), (122, 171560), (244, 85780), (305, 68624), (488, 42890), (610, 34312), (976, 21445), (1220, 17156), (2440, 8578), (4289, 4880)]