21621495

素因数分解:

$3^1\times 5^1\times 7^2\times {\mathrm{23}}^1\times {\mathrm{1279}}^1$

素因数の和:1324

約数の個数: 48

約数和(自身を含む): 42024960

約数和(自身を除く): 20403465

約数列:

[1, 3, 5, 7, 15, 21, 23, 35, 49, 69, 105, 115, 147, 161, 245, 345, 483, 735, 805, 1127, 1279, 2415, 3381, 3837, 5635, 6395, 8953, 16905, 19185, 26859, 29417, 44765, 62671, 88251, 134295, 147085, 188013, 205919, 313355, 441255, 617757, 940065, 1029595, 1441433, 3088785, 4324299, 7207165, 21621495]

約数ペア:

[(1, 21621495), (3, 7207165), (5, 4324299), (7, 3088785), (15, 1441433), (21, 1029595), (23, 940065), (35, 617757), (49, 441255), (69, 313355), (105, 205919), (115, 188013), (147, 147085), (161, 134295), (245, 88251), (345, 62671), (483, 44765), (735, 29417), (805, 26859), (1127, 19185), (1279, 16905), (2415, 8953), (3381, 6395), (3837, 5635)]