20779264

素因数分解:

$2^8\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{157}}^1$

素因数の和:231

約数の個数: 72

約数和(自身を含む): 46505088

約数和(自身を除く): 25725824

約数列:

[1, 2, 4, 8, 11, 16, 22, 32, 44, 47, 64, 88, 94, 128, 157, 176, 188, 256, 314, 352, 376, 517, 628, 704, 752, 1034, 1256, 1408, 1504, 1727, 2068, 2512, 2816, 3008, 3454, 4136, 5024, 6016, 6908, 7379, 8272, 10048, 12032, 13816, 14758, 16544, 20096, 27632, 29516, 33088, 40192, 55264, 59032, 66176, 81169, 110528, 118064, 132352, 162338, 221056, 236128, 324676, 442112, 472256, 649352, 944512, 1298704, 1889024, 2597408, 5194816, 10389632, 20779264]

約数ペア:

[(1, 20779264), (2, 10389632), (4, 5194816), (8, 2597408), (11, 1889024), (16, 1298704), (22, 944512), (32, 649352), (44, 472256), (47, 442112), (64, 324676), (88, 236128), (94, 221056), (128, 162338), (157, 132352), (176, 118064), (188, 110528), (256, 81169), (314, 66176), (352, 59032), (376, 55264), (517, 40192), (628, 33088), (704, 29516), (752, 27632), (1034, 20096), (1256, 16544), (1408, 14758), (1504, 13816), (1727, 12032), (2068, 10048), (2512, 8272), (2816, 7379), (3008, 6908), (3454, 6016), (4136, 5024)]