21303555

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{15607}}^1$

素因数の和:15635

約数の個数: 32

約数和(自身を含む): 41954304

約数和(自身を除く): 20650749

約数列:

[1, 3, 5, 7, 13, 15, 21, 35, 39, 65, 91, 105, 195, 273, 455, 1365, 15607, 46821, 78035, 109249, 202891, 234105, 327747, 546245, 608673, 1014455, 1420237, 1638735, 3043365, 4260711, 7101185, 21303555]

約数ペア:

[(1, 21303555), (3, 7101185), (5, 4260711), (7, 3043365), (13, 1638735), (15, 1420237), (21, 1014455), (35, 608673), (39, 546245), (65, 327747), (91, 234105), (105, 202891), (195, 109249), (273, 78035), (455, 46821), (1365, 15607)]