21604065

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{3373}}^1$

素因数の和:3449

約数の個数: 32

約数和(自身を含む): 40164096

約数和(自身を除く): 18560031

約数列:

[1, 3, 5, 7, 15, 21, 35, 61, 105, 183, 305, 427, 915, 1281, 2135, 3373, 6405, 10119, 16865, 23611, 50595, 70833, 118055, 205753, 354165, 617259, 1028765, 1440271, 3086295, 4320813, 7201355, 21604065]

約数ペア:

[(1, 21604065), (3, 7201355), (5, 4320813), (7, 3086295), (15, 1440271), (21, 1028765), (35, 617259), (61, 354165), (105, 205753), (183, 118055), (305, 70833), (427, 50595), (915, 23611), (1281, 16865), (2135, 10119), (3373, 6405)]