21887289

素因数分解:

$3^2\times {\mathrm{47}}^1\times {\mathrm{59}}^1\times {\mathrm{877}}^1$

素因数の和:989

約数の個数: 24

約数和(自身を含む): 32872320

約数和(自身を除く): 10985031

約数列:

[1, 3, 9, 47, 59, 141, 177, 423, 531, 877, 2631, 2773, 7893, 8319, 24957, 41219, 51743, 123657, 155229, 370971, 465687, 2431921, 7295763, 21887289]

約数ペア:

[(1, 21887289), (3, 7295763), (9, 2431921), (47, 465687), (59, 370971), (141, 155229), (177, 123657), (423, 51743), (531, 41219), (877, 24957), (2631, 8319), (2773, 7893)]