21267584

素因数分解:

$2^7\times {\mathrm{13}}^1\times {\mathrm{12781}}^1$

素因数の和:12808

約数の個数: 32

約数和(自身を含む): 45631740

約数和(自身を除く): 24364156

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 64, 104, 128, 208, 416, 832, 1664, 12781, 25562, 51124, 102248, 166153, 204496, 332306, 408992, 664612, 817984, 1329224, 1635968, 2658448, 5316896, 10633792, 21267584]

約数ペア:

[(1, 21267584), (2, 10633792), (4, 5316896), (8, 2658448), (13, 1635968), (16, 1329224), (26, 817984), (32, 664612), (52, 408992), (64, 332306), (104, 204496), (128, 166153), (208, 102248), (416, 51124), (832, 25562), (1664, 12781)]