20937784

素因数分解:

$2^3\times 7^1\times {\mathrm{89}}^1\times {\mathrm{4201}}^1$

素因数の和:4303

約数の個数: 32

約数和(自身を含む): 45381600

約数和(自身を除く): 24443816

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 89, 178, 356, 623, 712, 1246, 2492, 4201, 4984, 8402, 16804, 29407, 33608, 58814, 117628, 235256, 373889, 747778, 1495556, 2617223, 2991112, 5234446, 10468892, 20937784]

約数ペア:

[(1, 20937784), (2, 10468892), (4, 5234446), (7, 2991112), (8, 2617223), (14, 1495556), (28, 747778), (56, 373889), (89, 235256), (178, 117628), (356, 58814), (623, 33608), (712, 29407), (1246, 16804), (2492, 8402), (4201, 4984)]