21471339

素因数分解:

$3^1\times {\mathrm{29}}^1\times {\mathrm{47}}^1\times {\mathrm{59}}^1\times {\mathrm{89}}^1$

素因数の和:227

約数の個数: 32

約数和(自身を含む): 31104000

約数和(自身を除く): 9632661

約数列:

[1, 3, 29, 47, 59, 87, 89, 141, 177, 267, 1363, 1711, 2581, 2773, 4089, 4183, 5133, 5251, 7743, 8319, 12549, 15753, 80417, 121307, 152279, 241251, 246797, 363921, 456837, 740391, 7157113, 21471339]

約数ペア:

[(1, 21471339), (3, 7157113), (29, 740391), (47, 456837), (59, 363921), (87, 246797), (89, 241251), (141, 152279), (177, 121307), (267, 80417), (1363, 15753), (1711, 12549), (2581, 8319), (2773, 7743), (4089, 5251), (4183, 5133)]