21978390

素因数分解:

$2^1\times 3^1\times 5^1\times 7^1\times {\mathrm{104659}}^1$

素因数の和:104676

約数の個数: 32

約数和(自身を含む): 60284160

約数和(自身を除く): 38305770

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 30, 35, 42, 70, 105, 210, 104659, 209318, 313977, 523295, 627954, 732613, 1046590, 1465226, 1569885, 2197839, 3139770, 3663065, 4395678, 7326130, 10989195, 21978390]

約数ペア:

[(1, 21978390), (2, 10989195), (3, 7326130), (5, 4395678), (6, 3663065), (7, 3139770), (10, 2197839), (14, 1569885), (15, 1465226), (21, 1046590), (30, 732613), (35, 627954), (42, 523295), (70, 313977), (105, 209318), (210, 104659)]