21945495

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^2\times {\mathrm{787}}^1$

素因数の和:832

約数の個数: 48

約数和(自身を含む): 41530752

約数和(自身を除く): 19585257

約数列:

[1, 3, 5, 11, 13, 15, 33, 39, 55, 65, 143, 165, 169, 195, 429, 507, 715, 787, 845, 1859, 2145, 2361, 2535, 3935, 5577, 8657, 9295, 10231, 11805, 25971, 27885, 30693, 43285, 51155, 112541, 129855, 133003, 153465, 337623, 399009, 562705, 665015, 1463033, 1688115, 1995045, 4389099, 7315165, 21945495]

約数ペア:

[(1, 21945495), (3, 7315165), (5, 4389099), (11, 1995045), (13, 1688115), (15, 1463033), (33, 665015), (39, 562705), (55, 399009), (65, 337623), (143, 153465), (165, 133003), (169, 129855), (195, 112541), (429, 51155), (507, 43285), (715, 30693), (787, 27885), (845, 25971), (1859, 11805), (2145, 10231), (2361, 9295), (2535, 8657), (3935, 5577)]