2021776688

素因数分解:

$2^4\times {\mathrm{71}}^1\times {\mathrm{89}}^1\times {\mathrm{19997}}^1$

素因数の和:20165

約数の個数: 40

約数和(自身を含む): 4017198240

約数和(自身を除く): 1995421552

約数列:

[1, 2, 4, 8, 16, 71, 89, 142, 178, 284, 356, 568, 712, 1136, 1424, 6319, 12638, 19997, 25276, 39994, 50552, 79988, 101104, 159976, 319952, 1419787, 1779733, 2839574, 3559466, 5679148, 7118932, 11358296, 14237864, 22716592, 28475728, 126361043, 252722086, 505444172, 1010888344, 2021776688]

約数ペア:

[(1, 2021776688), (2, 1010888344), (4, 505444172), (8, 252722086), (16, 126361043), (71, 28475728), (89, 22716592), (142, 14237864), (178, 11358296), (284, 7118932), (356, 5679148), (568, 3559466), (712, 2839574), (1136, 1779733), (1424, 1419787), (6319, 319952), (12638, 159976), (19997, 101104), (25276, 79988), (39994, 50552)]