20987624

素因数分解:

$2^3\times 7^1\times {\mathrm{89}}^1\times {\mathrm{4211}}^1$

素因数の和:4313

約数の個数: 32

約数和(自身を含む): 45489600

約数和(自身を除く): 24501976

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 89, 178, 356, 623, 712, 1246, 2492, 4211, 4984, 8422, 16844, 29477, 33688, 58954, 117908, 235816, 374779, 749558, 1499116, 2623453, 2998232, 5246906, 10493812, 20987624]

約数ペア:

[(1, 20987624), (2, 10493812), (4, 5246906), (7, 2998232), (8, 2623453), (14, 1499116), (28, 749558), (56, 374779), (89, 235816), (178, 117908), (356, 58954), (623, 33688), (712, 29477), (1246, 16844), (2492, 8422), (4211, 4984)]