19872909

素因数分解:

$3^2\times 7^1\times {\mathrm{331}}^1\times {\mathrm{953}}^1$

素因数の和:1297

約数の個数: 24

約数和(自身を含む): 32939712

約数和(自身を除く): 13066803

約数列:

[1, 3, 7, 9, 21, 63, 331, 953, 993, 2317, 2859, 2979, 6671, 6951, 8577, 20013, 20853, 60039, 315443, 946329, 2208101, 2838987, 6624303, 19872909]

約数ペア:

[(1, 19872909), (3, 6624303), (7, 2838987), (9, 2208101), (21, 946329), (63, 315443), (331, 60039), (953, 20853), (993, 20013), (2317, 8577), (2859, 6951), (2979, 6671)]