21325395

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{919}}^1$

素因数の和:964

約数の個数: 64

約数和(自身を含む): 44513280

約数和(自身を除く): 23187885

約数列:

[1, 3, 5, 7, 13, 15, 17, 21, 35, 39, 51, 65, 85, 91, 105, 119, 195, 221, 255, 273, 357, 455, 595, 663, 919, 1105, 1365, 1547, 1785, 2757, 3315, 4595, 4641, 6433, 7735, 11947, 13785, 15623, 19299, 23205, 32165, 35841, 46869, 59735, 78115, 83629, 96495, 109361, 179205, 203099, 234345, 250887, 328083, 418145, 546805, 609297, 1015495, 1254435, 1421693, 1640415, 3046485, 4265079, 7108465, 21325395]

約数ペア:

[(1, 21325395), (3, 7108465), (5, 4265079), (7, 3046485), (13, 1640415), (15, 1421693), (17, 1254435), (21, 1015495), (35, 609297), (39, 546805), (51, 418145), (65, 328083), (85, 250887), (91, 234345), (105, 203099), (119, 179205), (195, 109361), (221, 96495), (255, 83629), (273, 78115), (357, 59735), (455, 46869), (595, 35841), (663, 32165), (919, 23205), (1105, 19299), (1365, 15623), (1547, 13785), (1785, 11947), (2757, 7735), (3315, 6433), (4595, 4641)]