21984585

素因数分解:

$3^1\times 5^1\times 7^3\times {\mathrm{4273}}^1$

素因数の和:4302

約数の個数: 32

約数和(自身を含む): 41030400

約数和(自身を除く): 19045815

約数列:

[1, 3, 5, 7, 15, 21, 35, 49, 105, 147, 245, 343, 735, 1029, 1715, 4273, 5145, 12819, 21365, 29911, 64095, 89733, 149555, 209377, 448665, 628131, 1046885, 1465639, 3140655, 4396917, 7328195, 21984585]

約数ペア:

[(1, 21984585), (3, 7328195), (5, 4396917), (7, 3140655), (15, 1465639), (21, 1046885), (35, 628131), (49, 448665), (105, 209377), (147, 149555), (245, 89733), (343, 64095), (735, 29911), (1029, 21365), (1715, 12819), (4273, 5145)]