28261280

素因数分解:

$2^5\times 5^1\times {\mathrm{173}}^1\times {\mathrm{1021}}^1$

素因数の和:1209

約数の個数: 48

約数和(自身を含む): 67218984

約数和(自身を除く): 38957704

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 173, 346, 692, 865, 1021, 1384, 1730, 2042, 2768, 3460, 4084, 5105, 5536, 6920, 8168, 10210, 13840, 16336, 20420, 27680, 32672, 40840, 81680, 163360, 176633, 353266, 706532, 883165, 1413064, 1766330, 2826128, 3532660, 5652256, 7065320, 14130640, 28261280]

約数ペア:

[(1, 28261280), (2, 14130640), (4, 7065320), (5, 5652256), (8, 3532660), (10, 2826128), (16, 1766330), (20, 1413064), (32, 883165), (40, 706532), (80, 353266), (160, 176633), (173, 163360), (346, 81680), (692, 40840), (865, 32672), (1021, 27680), (1384, 20420), (1730, 16336), (2042, 13840), (2768, 10210), (3460, 8168), (4084, 6920), (5105, 5536)]