21154880

素因数分解:

$2^6\times 5^1\times {\mathrm{66109}}^1$

素因数の和:66126

約数の個数: 28

約数和(自身を含む): 50375820

約数和(自身を除く): 29220940

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 66109, 132218, 264436, 330545, 528872, 661090, 1057744, 1322180, 2115488, 2644360, 4230976, 5288720, 10577440, 21154880]

約数ペア:

[(1, 21154880), (2, 10577440), (4, 5288720), (5, 4230976), (8, 2644360), (10, 2115488), (16, 1322180), (20, 1057744), (32, 661090), (40, 528872), (64, 330545), (80, 264436), (160, 132218), (320, 66109)]