20964256

素因数分解:

$2^5\times {\mathrm{47}}^1\times {\mathrm{53}}^1\times {\mathrm{263}}^1$

素因数の和:373

約数の個数: 48

約数和(自身を含む): 43110144

約数和(自身を除く): 22145888

約数列:

[1, 2, 4, 8, 16, 32, 47, 53, 94, 106, 188, 212, 263, 376, 424, 526, 752, 848, 1052, 1504, 1696, 2104, 2491, 4208, 4982, 8416, 9964, 12361, 13939, 19928, 24722, 27878, 39856, 49444, 55756, 79712, 98888, 111512, 197776, 223024, 395552, 446048, 655133, 1310266, 2620532, 5241064, 10482128, 20964256]

約数ペア:

[(1, 20964256), (2, 10482128), (4, 5241064), (8, 2620532), (16, 1310266), (32, 655133), (47, 446048), (53, 395552), (94, 223024), (106, 197776), (188, 111512), (212, 98888), (263, 79712), (376, 55756), (424, 49444), (526, 39856), (752, 27878), (848, 24722), (1052, 19928), (1504, 13939), (1696, 12361), (2104, 9964), (2491, 8416), (4208, 4982)]