21638816

素因数分解:

$2^5\times {\mathrm{41}}^1\times {\mathrm{16493}}^1$

素因数の和:16544

約数の個数: 24

約数和(自身を含む): 43643124

約数和(自身を除く): 22004308

約数列:

[1, 2, 4, 8, 16, 32, 41, 82, 164, 328, 656, 1312, 16493, 32986, 65972, 131944, 263888, 527776, 676213, 1352426, 2704852, 5409704, 10819408, 21638816]

約数ペア:

[(1, 21638816), (2, 10819408), (4, 5409704), (8, 2704852), (16, 1352426), (32, 676213), (41, 527776), (82, 263888), (164, 131944), (328, 65972), (656, 32986), (1312, 16493)]