21098105

素因数分解:

$5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{59}}^1\times {\mathrm{601}}^1$

素因数の和:689

約数の個数: 32

約数和(自身を含む): 31207680

約数和(自身を除く): 10109575

約数列:

[1, 5, 7, 17, 35, 59, 85, 119, 295, 413, 595, 601, 1003, 2065, 3005, 4207, 5015, 7021, 10217, 21035, 35105, 35459, 51085, 71519, 177295, 248213, 357595, 602803, 1241065, 3014015, 4219621, 21098105]

約数ペア:

[(1, 21098105), (5, 4219621), (7, 3014015), (17, 1241065), (35, 602803), (59, 357595), (85, 248213), (119, 177295), (295, 71519), (413, 51085), (595, 35459), (601, 35105), (1003, 21035), (2065, 10217), (3005, 7021), (4207, 5015)]