21948128

素因数分解:

$2^5\times {\mathrm{29}}^1\times {\mathrm{67}}^1\times {\mathrm{353}}^1$

素因数の和:459

約数の個数: 48

約数和(自身を含む): 45496080

約数和(自身を除く): 23547952

約数列:

[1, 2, 4, 8, 16, 29, 32, 58, 67, 116, 134, 232, 268, 353, 464, 536, 706, 928, 1072, 1412, 1943, 2144, 2824, 3886, 5648, 7772, 10237, 11296, 15544, 20474, 23651, 31088, 40948, 47302, 62176, 81896, 94604, 163792, 189208, 327584, 378416, 685879, 756832, 1371758, 2743516, 5487032, 10974064, 21948128]

約数ペア:

[(1, 21948128), (2, 10974064), (4, 5487032), (8, 2743516), (16, 1371758), (29, 756832), (32, 685879), (58, 378416), (67, 327584), (116, 189208), (134, 163792), (232, 94604), (268, 81896), (353, 62176), (464, 47302), (536, 40948), (706, 31088), (928, 23651), (1072, 20474), (1412, 15544), (1943, 11296), (2144, 10237), (2824, 7772), (3886, 5648)]