20561664

素因数分解:

$2^8\times 3^1\times {\mathrm{41}}^1\times {\mathrm{653}}^1$

素因数の和:713

約数の個数: 72

約数和(自身を含む): 56144592

約数和(自身を除く): 35582928

約数列:

[1, 2, 3, 4, 6, 8, 12, 16, 24, 32, 41, 48, 64, 82, 96, 123, 128, 164, 192, 246, 256, 328, 384, 492, 653, 656, 768, 984, 1306, 1312, 1959, 1968, 2612, 2624, 3918, 3936, 5224, 5248, 7836, 7872, 10448, 10496, 15672, 15744, 20896, 26773, 31344, 31488, 41792, 53546, 62688, 80319, 83584, 107092, 125376, 160638, 167168, 214184, 250752, 321276, 428368, 501504, 642552, 856736, 1285104, 1713472, 2570208, 3426944, 5140416, 6853888, 10280832, 20561664]

約数ペア:

[(1, 20561664), (2, 10280832), (3, 6853888), (4, 5140416), (6, 3426944), (8, 2570208), (12, 1713472), (16, 1285104), (24, 856736), (32, 642552), (41, 501504), (48, 428368), (64, 321276), (82, 250752), (96, 214184), (123, 167168), (128, 160638), (164, 125376), (192, 107092), (246, 83584), (256, 80319), (328, 62688), (384, 53546), (492, 41792), (653, 31488), (656, 31344), (768, 26773), (984, 20896), (1306, 15744), (1312, 15672), (1959, 10496), (1968, 10448), (2612, 7872), (2624, 7836), (3918, 5248), (3936, 5224)]