21080248

素因数分解:

$2^3\times 7^1\times {\mathrm{31}}^1\times {\mathrm{12143}}^1$

素因数の和:12187

約数の個数: 32

約数和(自身を含む): 46632960

約数和(自身を除く): 25552712

約数列:

[1, 2, 4, 7, 8, 14, 28, 31, 56, 62, 124, 217, 248, 434, 868, 1736, 12143, 24286, 48572, 85001, 97144, 170002, 340004, 376433, 680008, 752866, 1505732, 2635031, 3011464, 5270062, 10540124, 21080248]

約数ペア:

[(1, 21080248), (2, 10540124), (4, 5270062), (7, 3011464), (8, 2635031), (14, 1505732), (28, 752866), (31, 680008), (56, 376433), (62, 340004), (124, 170002), (217, 97144), (248, 85001), (434, 48572), (868, 24286), (1736, 12143)]