20897656

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{4673}}^1$

素因数の和:4735

約数の個数: 32

約数和(自身を含む): 43187760

約数和(自身を除く): 22290104

約数列:

[1, 2, 4, 8, 13, 26, 43, 52, 86, 104, 172, 344, 559, 1118, 2236, 4472, 4673, 9346, 18692, 37384, 60749, 121498, 200939, 242996, 401878, 485992, 803756, 1607512, 2612207, 5224414, 10448828, 20897656]

約数ペア:

[(1, 20897656), (2, 10448828), (4, 5224414), (8, 2612207), (13, 1607512), (26, 803756), (43, 485992), (52, 401878), (86, 242996), (104, 200939), (172, 121498), (344, 60749), (559, 37384), (1118, 18692), (2236, 9346), (4472, 4673)]