21607328

素因数分解:

$2^5\times {\mathrm{41}}^1\times {\mathrm{43}}^1\times {\mathrm{383}}^1$

素因数の和:477

約数の個数: 48

約数和(自身を含む): 44706816

約数和(自身を除く): 23099488

約数列:

[1, 2, 4, 8, 16, 32, 41, 43, 82, 86, 164, 172, 328, 344, 383, 656, 688, 766, 1312, 1376, 1532, 1763, 3064, 3526, 6128, 7052, 12256, 14104, 15703, 16469, 28208, 31406, 32938, 56416, 62812, 65876, 125624, 131752, 251248, 263504, 502496, 527008, 675229, 1350458, 2700916, 5401832, 10803664, 21607328]

約数ペア:

[(1, 21607328), (2, 10803664), (4, 5401832), (8, 2700916), (16, 1350458), (32, 675229), (41, 527008), (43, 502496), (82, 263504), (86, 251248), (164, 131752), (172, 125624), (328, 65876), (344, 62812), (383, 56416), (656, 32938), (688, 31406), (766, 28208), (1312, 16469), (1376, 15703), (1532, 14104), (1763, 12256), (3064, 7052), (3526, 6128)]