213448520

素因数分解:

$2^3\times 5^1\times {\mathrm{79}}^1\times {\mathrm{67547}}^1$

素因数の和:67637

約数の個数: 32

約数和(自身を含む): 486345600

約数和(自身を除く): 272897080

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 79, 158, 316, 395, 632, 790, 1580, 3160, 67547, 135094, 270188, 337735, 540376, 675470, 1350940, 2701880, 5336213, 10672426, 21344852, 26681065, 42689704, 53362130, 106724260, 213448520]

約数ペア:

[(1, 213448520), (2, 106724260), (4, 53362130), (5, 42689704), (8, 26681065), (10, 21344852), (20, 10672426), (40, 5336213), (79, 2701880), (158, 1350940), (316, 675470), (395, 540376), (632, 337735), (790, 270188), (1580, 135094), (3160, 67547)]